DIFFERENCES IN 'I'HE INCIDENCE OF SCHIZOPHRENIA " AS SHOWN BY FIRST ADMISSIONS TO MENTAL HOSPITALS IN THE. STATE OF MICHIGAN Thai: for I110 Dam of M. A. MICHIGAN STATE UNIVERSITY Henry Holstege I958 THESIS DIFFERLHCJS IE TAB INCIDSQUE OF SCJIZOrdfiEfiIA AS saown BY FIRST ADEISSIONS TO mLNTnL AOSEITALS IN THE STATE OF LICHIGAN by Henry Holstege AW ABSTRACT Submitted to the College of Science and Arts Michigan State University of Agriculture and Applied Science in partial fulfillment of the requirements for the degree of MASTER OF ARTS Department of Sociology and Anthropology 1958 Approved ;{;[Xfifiumpflincrlz/ y HELRY HOLSTEGE ABSTRACT In order to investigate the distribution of schiz0phrenia in Michigan, first admission schiZOphrenics to all the State Mental Hospitals in Michigan, the Veterans Administration Hos- pital at Battle Creek, and the two largest private hospitals in hichigan for the years 1949, 1950, and 1951 were studied. These data were coded and punched on IBM cards and analyzed by machine methods. The two major hypotheses stated were: (1) there is a direct relationship between urbanity and the rate of schizophrenia and (2) that the incidence of schizo— phrenia is not random throughout the po ulation in regard to marital status, nativity, sex, and age. The state of michigan was divided into three separate areas; Standard Metropolitan areas, counties contiguous to Standard MetrOpolitan Areas, and counties not contiguous to Standard LetrOpolitan Areas. It was assumed that these three areas were in different stages of urbanization. The result of the study showed that the Standard Metropolitan Areas had the highest rate of schizophrenia, counties not contiguous to Stan- dard Metropolitan Areas had the next highest rate of schizo- phrenia, while counties contiguous to Standard Metropolitan Areas had the lowest rate of schizophrenia. Therefore, it was concluded that in Michigan there is no direct relationship between urbanity per se and the rate of schizophrenia. 2 HENRY HOLSTEGE ABSTRACT The rate of sch1z0phrenia was also determined for age, sex, nativity, and marital status. The population of the state of Michigan was grouped into ten year age groupings. It was found that the rate of schizo- phrenia was highest in the age group 25-54, and that there was a real difference in the rates between all the age groupings. The schiz0phrenic rate declined steadily after the 25-34 age group, with every subsequent age group having a lower rate of schizophrenia than the one preceding it. The pOpulation of the state of Michigan was also separated by sex and the rate of schizophrenia for each sex computed. The difference in the rate of schiz0phrenia was found to be so slight that it was not considered to be a real difference. Separate schizOphrenic rates were also computed of the population of Michigan on the basis of nativity. It was found that there was a real difference in the foreign and native born rates and that the foreign born had a lower rate of schizo- phrenia than the native born. Schizophrenic rates by marital status were obtained. The results show that there is a real difference among the various marital status groups and that the divorced had the highest rate, followed by the separated, single, widowed, and married. 3 HARRY MQLSTLGE ABSTdaCT In general, the findings of this study Should indicate those groups in society which are particularly susceptible to schizophrenia. DIFEBREhCaS IR T43 INCIDEHCE CF SCHIZClfiREhIA AS SHOWN BY FIRST ADMISSICES TO LENTnL HOSrlTAIS IN TnE STATE OF MICHIGAN by Henry Holstege A’THESIS Submitted to the College of Science and Arts Michigan State University of Agriculture and Applied Science in partial fulfillment of the requirements for the degree of MASTER OF ARTS Department of Sociology and Anthropology 1958 ACKECJLEDGHHNTS The author wishes to eXpress his appreciation to Dr. J. Allan Beegle for his patient understanding and valuable supervision which was responsible, to a great extent, for this study. He also wishes to extend thanks to Dr. Charles R. Hoffer, acting Head of the Department of Sociology and Anthropology, and to all other members of the department who, in ways too numerous to mention, contributed to this project. Sincere thanks and appreciation are extended to Gwen Andrew, chief of the research section of the hichigan State Department of Mental Health, and her staff, for valuable and congenial assistance in obtaining the necessary data. To Dr. George Tokuhata, research sociologist with the hichigan State Department of Mental Health, go my heartfelt thanks for the many hours spent in teaching the author the demographic techniques necessary for the completion of this study. To David Fitch, chief of the statistics section of the Michigan State Department of Mental Health, the author is indebted for help in the compilation of his data. The author also wishes to express his gratitude and general indebtedness to his wife, Lois Veltkamp Holstege, without whose patience, and at times forbearance, this study could not have been completed. CHAPTER I. I II. RE III. Ah IV. SU TABLE OF COHTENTS IETRODUCTIOII o o o o o o 0 Nature and Description of Troblem. Source of Data and Mode of Summary. . . . . . . . . VIEJ OF LITERATURE . . . Urban-Rural Differentials. marital Differentials. . Age Differentials . . . llativity Differentials . Socio-Economic Class Differentials mental Disorders in Urban Places Sociological Theories of of SchiZOphrenia . . . ALYSIS OF DATA . . . . . age. . . . . . . . . . . Sex. . . . . . . . . . . Nativity . . . . . . . . Marital Status . . . . . Urban—Rural areas. . . . anaar aJD CONCLUSIONS. . BlBLIOGRJLIIIY o o o o o o o o o o APlEEDIX Analysis. the Etiology VI. VII. LIST OF TABLSS Crude Schizo hrenic Rate by Age in the State of Lichigan 1949, 1950, and l951 . . . . . Schizophrenic Rates by Sex in the State of hichigan 1949, 1950, and l95l. . . . . . . Schiz0phrenic Rates by Nativity in the State Of I--iCIIiE§8.n 1949,1950, wa 1951 o o o o o Schizopnrenic Rates by marital Status in the State of hichigan 1949, 1950, and 1951 . . Schizophrenic Rates by Area in the State of hicnigan 1949, 1950, and 1951. . . . . . . harital Status btandardized Rates by Area in the State of hichigan 1949, 1950, and 1951 Sex Standardized Rates by Area in the State of hicnigan 1949, 1950, and 1951 . . . . . TAGE 49 55 55 57 65 67 68 CHAPTER I INTRODUCTION The purpose of this thesis is to study the distribution of schiZOphrenia in Michigan, with emphasis upon urban— rural incidence. The assumption is made that schizophrenia is a disease entity. It is further assumed that the content and etiology of schiz0phrenia are social psychological or psychiatric in nature. Ihe assumption is also made, how- ever, that this disease entity is greater in one group than in another and that the differing characteristics of these groups may be regarded as a sociological question. Thus, it is assumed that social factors, if not the primary cause of schizophrenia, are at least precipitating factors. The major hypotheses may be stated as follows: 1. 1'he incidence of schizophrenia varies according to urban and rural residence. a. The rate of schizophrenia in Michigan will be higher in Standard metropolitan Areas than outside such areas. b. The rate of schizophrenia in Michigan will be higher in counties contiguous to Standard hetropolitan Areas than in those counties not contiguous to Standard Metropolitan Areas. 2. The incidence of schizophrenia is not random throughout the population in regard to marital status, nativity, sex, and age. a. Married people in Michigan will have a lower rate of schIZOphrenia than widowed, single, or divorced persons. b. Widowed persons will have a lower rate of schizophrenia than divorced or single persons. 0. Single persons will have a lower rate of schizo- phrenia than the divorced. d. Eemales in Michigan will have a higher rate of schizophrenia than males. e. Foreign born persons will have a higher rate of schiz0phrenia in Michigan than native born. f. The schizophrenic rate in Michigan will vary in a non-random pattern by ten year age break-downs. This study is concerned with the incidence, not the prevalence, of schiZOphrenia. first admission schiz0phrenics to priVate, state, and federal (Veterans Administration) hospitals in Michigan for the years 1949-1950-1951 will be used. These three years were chosen so that the pOpulation base of the 1950 census can be used in comput- ing rates. The prevalence rate, based on cases obtained on one census date, is a function of annual incidence, duration and intensity of illness, modes of onset, and quality of treatment. Thus, chronic cases obtaining custodial care in state hospitals are more likely to be included in prevalence studies than cases obtaining acute, short— term treatment. Thus, cases are not weighted equally. Incidence could actually be edual in two groups with markedly different prevalence. Just because there are schizophrenics not hospitalized as found in mental disease surveys does not mean that they will not be hos— pitalized in the future, and if they are hospitalized in the future then first admissions will be an adequate criterion of the schizophrenic rate. The point is not how many schizophrenics are about in the population at a given period of time but how many never are institu- tionalized. "known," not "true" Of course, by incidence is meant incidence. Because of the excellent COOperation of the private, state, and federal hospitals, and because of the nature of the disease itself, this writer believes that at most only a very small fraction of known schiz- cphrenics could have escaped his net. It would have been desirable to take into account also the cases which are not hospitalized at all but are cared for in their own homes. However, it seems unlikely that the number could be large in proportion to the hospitalized cases, or that they would be dis— tributed in the population in a different ratio than the hospitalized cases. Besides, schizophrenic patients are so markedly mentally ill at the tihe of commitment that they can hardly be cared for at home, even if the members of the family desired to do so.1 Every effort is made by the hichigan State Depart- ment of hental Health to differentiate between first admissions and readmissions, and it is unlikely that an appreciable number of readmissions could be classi- fied as first admissions. The records of the private and federal hOSpitals were personally scynned by the writer to make certain that only first admissions would be included in the study. The writer checked every entrance record for the years 1949-50-51 and set aside the record of every person that had evidence of a previous com- mittal for schiz0phrenia at any institution at any time. He accepted only the records of those persons who were diagnosed as first admission schiZOphrenics. As stated above, the state hospital records were sorted automatically on the basis of first admission schizophrenia. hence any error in tabulating at the hospital level, if any, must have been slight. 1a a . a -4 .. .. . hobert h. L. Fans and d. warren Uunham, mental Disorders in Urban Areas, Chicago: University of Chicago Press, T939. Schizophrenia was especially chosen from the range of diagnostic categories because it is considered by many psychiatrists as one of those psychoses which has such definite clinical symptoms that it will sooner or later necessitate hospitalization.2 According to kline3 schiz0phrenia is an actual disease concept, and the concept includes sympto;:ns which occur only and always in schIZOphrenia. He also states that accessory symptoms may vary and the subtypes may pass over into one another without altering the essence of the disease. Besides, apart from the disorders of advanced age, schizo- phrenia is the most common disorder, it lasts longer, has fewer recoveries, and is the most difficult for the patient, his relatives, and his friends to understand.4 As long as a patient ultimately goes to the hospital it does not matter very much from the statistical point of view how long this step may be delayed.5 2%. fidegaard, "A Statistical Investigation of the Incidence of Mental Disorder in Norway," Psychiatric quarterly, July, 1946 pp. 382-585. 3Nathan Kline, Synopsis of Eugene Bleuler' s Dementia Praecox or the Group of Uchizophrenics, hew York: International Universities Press, 1952. 4Carney Landis and M. harjorie Bolles, Textbook gf Abnormal Psychology, New York: macmillan Co. 1950. 5Christopher Tietze, P. Lemkau, and m. Cooper, "Schizo- phrenia, Manic-Depressive Psychoses and Social-Economic Status," American Journal 3; Sociology, Vol. 47, September 1941, pp. 167- 175. The study of the causes of schizophrenia has been made from various points of view. Uauses have been sought in heredity, germ diseases, glandular disorders, blood chemistry, brain defects and other constitutional traits. It is safe to state that no conclusive findings have resulted from any of these approaches.6 The writer agrees with those who state the hypothesis that the cause of schiz0phrenia can be sought in the social experiences of the individual. It may be that in the nature of these experiences, and the type of social relations or the la0k of social relations, the explanation lies.7 The writer is aware of the work done on the hereditary and physical aspects of schiZOphrenia. Such work on the blood chemistry of schiz0phrenics as that of the Swedish biochemist btig Akerfeldt, the work of the American neuropsycniatrist, hicholas Bercel, and the class1cal study by hallman on the genetics of schizophrenia are examples. lt should be emphasized that the writer in no way wishes to minimize the contribution of hereditary factors in the etiology of schizo- phrenia, however unknown the specific nature of these hereditary 6Robert S. L. raris, "Cultural Isolation and the Schizo- phrenic Tersonality," American Journal gf Sociology, oept.1954 p. 155. 7Ibid., p. 169. 7 forces may be. He does however agree with Nicholas Pastore who wrote in the lsychological Bulletin of 19498 that no knowledge to date of the physical aspects of schiz0phrenia can preclude an environmental component. It soon becomes apparent to any person who has read many case histories of schiz0phrenics that there are both psychogenic and sociogenic disturbances in the life history of persons who later develop a "functional" mental disorder. The crucial question is, however, whether these mental and social distrubances are causal in the mental derangement or only symptomatic of underlying constitutional tendencies. The success that some hospitals seem to have with the so-called "tranquilizers” does not mean that the etiOIOgy of the disease is a physical one. It is quite possible that a phenomenon may be induced socially and removed organically and vice versa.9 The symptomatology of schizophrenia is varied but certain symptoms appear to be somewhat common to all forms. The textbooks of psychiatry generally include the following symptom : apathy and indifference, lack of contact with reality, disharmony between mood and thought, 8 . . . Nicholas Pastore, "The Genetics of bch1z0phren1a: A Special Review," rsychological Bulletin, Vol. 46, July, 1949, pp. 285-302. 9 Faris and Dunham o . cit. . xiv. 9 ____ 7 stereotyped attitudes, ideas of reference, delusions, illusions, hallucinations, impaired judgement, lack of attention, generally intact memory, lack of insight, defects of interest, seclusive makeup, hypochondriacal notions, and negativism.lo The instructions followed in the private, state, and federal (Veterans Administration) hospitals in Michigan in classifying schizophrenics are those recommended by the american Isychiatric Association. No correction can be made for diagnostic disagreement in the present study. 1'he probable existence of bias does not preclude statistical analysis which, in fact, sometimes uncovers other bias not previously suspected. A slight margin of error in the basic data emphasizes, the need for caution but does not prevent drawing proper inferences and conclusions. (If it did, the efforts of statisticians in many areas would be futile indeed, even those of the physicists). ll Schiz0phrenia was not broken down into its several subtypes, namely, simple, hebephrenic, catatonic, and paranoid. lOFaris and Uunham, 22. cit., p. 58. ll . . 1 . w. . . q Bengamin malzoerg and Alfred Lee, migration and hental Disease, New York: Social Science Research Council, 1956. The belief is held among the staffs of many hospitals that the difficulty in accurately distinguishing the subtypes of schiZOphrenia makes it not worth attempting since it is practically impossible to find agreement as to the characteristics of the various types. In fact, not all institutions even attempt to classify this category of mental disorder into subtypes.12 SOURCE OF DATA kHD MODh OF ANALYSIS The data for this study consist of 3,881 first admission schizophrenics to the two largest private hospitals in Michigan, and The Reuropsychiatric Institute at Ann Arbor, l'he Veterans Administration hospital at Fort Custer, and all the btate mental hospitals including Wayne Uounty ueneral, now called Eloise. The data were collected by county and then the counties grouped into the following three groups: (1) the sparsely populated northern part of the state, that is, north of the so—called Bay Uity-huskegon line. This group of counties is characterized by a mixed economic base of resort trade, mining, fishing, marginal forestry and farming; (2) the Standard Metropolitan Areas con- sisting of the urban—industrial counties of Southern Michigan; and (5) the Southern agricultural counties contiguous 12Faris and Dunnam, gp. cit., p. 82. 10 to the btandard hetropolitan Areas. Ten year age break-downs have been made as follows: 15—24 25-34 55-44 45-54 55-64 654 The above age break down is used because it is the one most readily available from the State mental hospitals 13 and is similar to the age break down used by fidegaard, i4 9 in their studies. Schizophrenia Dayton, and halzbergi below the age of fifteen is numerically insignificant and hence is not included. The ten year age break downs stopped at the age 65 because of the paucity of cases at this and higher age levels. Comparisons will be based on age standardized rates; crude rates will not be used as it is the aim of this study to control as many as possible of the factors known to be important in the incidence of schizophrenia. The limitations of hospital and census data are such that only nativity, sex, age, and marital status can be controlled. These, however, are among the most important factors affecting comparisons l4Benjamin Malzberg, "Social and Biological Aspects 2f Mental Disease," Utica New York: State Hospital Press, 1940. 15Neil A. Dayton, New Facts 22 Mental Disorders, Spring- field, Ill: Charles C. Thomas Co. 1949. ll of rates of schizophrenia in different pOpulations.l6 In computing each rate the numerator has been the number of first admissions for the area under discussion to all hospitals for mental disease, and the denominator l7 Dy applying has been the corresponding base population. the specific rates of first admissions of the various areas to a common standard, namely, the population of the State of Michigan age 15 years and over, as shown by the Federal census of april 1, 1950 we get the stan- dardized rate.18 16 l7Admittedly as Jaffe has pointed out, this produces somewhat of an unavoidable bias because the proper denom- inator for rates of first admission is not the total pop- ulation but the pOpulation that has not previously been admitted as schizophrenics to hospitals for mental disease. See U. S. Bureau of the Uensus, Handbook 2; Statistical hethods for Demographers, A. J. Jaffe, l951, p. 50.) 18The statistical technique of standardization used in this study is the Direct Standardization which is expressed in the following mathematical formula devised by Dr. George Tokuhata of the michigan Department of mental Malzberg and Lee, 92, cit. Health. Dxnx 1,000 Pyn H rxn Dxn fyn Standardized Rate 1,000 1,000 Pxn 1,000 Eyn Pyn Py . . . . Number of peOple in nth age group of stan- dard population. 12 The writer is congnizant that the data are not close enough to the phenomena of schiz0phrenia to establish any clear cut case for the operation of definite causa- tive faCtors. The method employed only enables one to view the data quantitatively in the community setting in which it occured. However, the ecological material and the relationship found between schiZOphrenia does enable the research worker to raise significant questions. As is well known in the public health field, the epi- demiological study of a physical disease has often been the forerunner of control and eventual prevention of that 8 . continued Pxn . . . . Number of people in nth age group of sample population. -Dxn . . . . Number of schizophrenics in nth age group of sample pOpulation. Pyn . . . Total number of people in standard population. n . . . . . Number of age groups in a pOpulation. The 1950 pOpulation of hichigan is used as the stan- dard pOpulation. The actual operation of this method involves two processes: first, to compute the age specific schizophrenic rates for a sample population and, second to apply then to the standard pOpulation to obtain the number of hypo- thetical schizophrenics in the standard pOpulation. This implies that if a sample population being studied had the same age composition as the standard population, while retaining its observed age specific rates, the summarized figures Istandardized rate) would represent the frequency with whicn schizophrenia would have occurred. l3 l9 disease. Not many would quarrel with the general pro- position that the social setting in which men live and the things that they believe are correlated with many of the symptoms of mental pathology. Even a superficial review of hospital, police, and census reports shows that human groups differ widely in their observed rates of mental and personality disorders. Ihere is far less agreement about what these variations mean. The question of why and how mental disorders are related to cultural pressures, therefore, requires intensive investigation. Even a partial answer might lead to insights that could result in improvements of presently inadequate methods of pre- vention, treatment, and cure. Mental disorders are definitely not distributed at random throughout the human race. If more can be learned about the precise nature of these pop- ulation differences, plausible and experimentally testable hypotheses are likely to emerge which can put scientists on the trail of new knowledge in a field now enveloped in mystery and obscurity.2O 19H. Warren Dunham, "Some Persistent Problems in the Epid- demiology of mental Disorders," American Journal 2: fsychiatry, 20Joseph W. Eaton and Robert J. Weil, "The Mental Health of the dutterites," in Arnold M. Rose, Mental Health and Mental Disorder: {fl Sociological Approach, New York: W. W. Norton Co., 19559 PP. 224-225. 14 In the early years of this century the great psychia- trist, Adolf heyer, then associated with the mental hospitals of New York State, directed attention to the influence of social conditions in generating mental disorders. He found that some counties in the state had much higher rates of admissions to mental hospitals than others, and he attri- buted the differences to variations in social conditions. The question to be answered, of course, is what are the social conditions that produce a high rate of mental disease.21 This type of study has been used for the following purposes: 1. To use distribution patterns of schizophrenia as certain kinds of evidence for a study of a .community itself; 2. to utilize such studies as an aid in solving problems that administrations face in the handl- ing of public health issues as they may be related to mental disease; 3. to develop certain hypotheses concerning the role of social factors in the development of various kinds of mental disorders; 4. and finally to use such studies as a basis for the development of preventive programs. 21Ernest M. Gruenberg, "The Epidemiology of Mental Disease," Scientific American, (march 1954) pp. 38—42. 22H. W. hunham, op. cit., pp. 567-575. 15 SULhARY It is assumed that a statistical analysis of schizo- phrenic data is meaningful. In many instances certain information is lacking. Some cases of schizophrenia doubtless have been concealed. On the other hand,as previously stated, it is not felt that these factors will drastically affect the conclusions reached in the present study. Various factors which may contribute to schiZOphrenia will be iSOlated and the schiz0phrenic rate for each isolated group will be determined. lndices such as sex, age, marital status, nativity, and eCOlogical area will be utilized to indicate the relative effects of the various factors on the schiz0phrenic rate. It is recognized that no absolute etiology can result from this study. The level of abstraction is above that of the indiVidual case history level. If any complete etiology is to be developed, the individual case must be analyzed. However, an indication of the type of condi— tions 'hich foster schizophrenic tendencies will be of great aid to the psychologist wno attempts to analyze individual cases. This study will contribute to our understanding of the subject in at least three ways. First, it will indicate the extent of the phenomenon in Michigan. Second, 16 it will indicate those groups in society which are parti- cularly susceptible to schiz0phrenia. Third, by utiliz- ing the data on several Variables, those kinds of condi- tions which, whether primary or not in the promotion of schizophrenia, are at least underlying predisposing 23 and precipitating factors, may be inferred. 23Wyidick W. Schroeder, "Suicide Differentials in Michigan," Unpublished m.A. Thesis, Michigan State University, 1951. CHAPTER II 17 REVIEW OF LITERATURE The majority of the studies concerning the distribu— tion of mental disease in the United States have been con- ducted in urban communities. Almost all of the studies have been conducted in cities, counties, and health dis— tricts within cities, and nearly all of these have been in only one type of city, the commercial-industrial. Not all studies of mental disorder have standardized or adjusted their rates for such significant variables as age and sex. Some psychiatric surveys offer only a gen- eral description of findings, presenting total numbers, percentages, or rates in terms of some specified popu- lation base, as if these data "speak for themselves". Whether or not rate differentials are "true" differences, and are not due to the probability of chance, cannot be determined from a mere description of the research findings. Furthermore, many studies have omitted cases obtaining private treatment, thus running a risk of serious bias in the results. The conditions that influence patients seeking privately rather than publicly supported psychiatric care and treatment can reasonably be expected to vary considerably in differ- ent locales within a society as complex as the United 18 States.1 Hence to avoid some of the sources of error listed above, this study will attempt to take into account not only areas within large commercial-industrial cities but will also take into account areas outside of urban areas. This study will also state explicitly how the mental disease rates were obtained and the rates will be standardized for the important variables of age, sex, marital status, and nativity. Industrialization and consequent urbanization have often been held as conditions related to an increase in the rate of mental disease.2 As early as 1896 Franklin H. Giddings wrote that, The isolated farmer and his family have begun to be affected by the strain of modern life in a deplorable way. They are no longer ignorant of the luxuries of the towns, and a simple manner of life no longer satisfies them. The home must be remodeled and refurnished, the table must be varied; clothing must be in style; and the horses, carriages and harnesses must be more costly. The impossibility of maintaining this rate of expense under existing agricultural conditions embitters life 3 and finally in many cases destroys the mental balance. Giddings however did not present any standardized statistics that showed just what the rural rates of mental disease were as compared with the urban rate. 1E. Gartly Jaco, "Social Factors in Mental Disorders in Texas," Social Problems, Vol. 1, April 1957, pp. 322—328. 2 Ibido , pp. 322-3280 3Franklin H. Giddings, Principles pf Sociology, (New York: Macmillan 00., 1896) p. 349. 19 The question of urban-rural mental disease differentials to this day is not clear. There are very few compre- hensive studies of urban-rural mental disease differ- entials that include patients in priv te hospitals and that include standardized data. 0f the few that meet such specifications, there is not agreement as to the nature of the differences, as will be explained below. The first authoritative statistical analysis of the environmental distribution of patients with mental disease may be found in the Bulletin pp the Insane and Feebleminded ip Institutions, 1910, published by the Bureau of the Census. In this report, communities with a population of less than 2,500 were considered rural; those with a pOpulation of 2,500 or more were regarded as urban. 0n the basis of total admissions to hOSpitals for the insane in the United States in 1910, it was shown that the rural rate was 41.4 per 100,000 corresponding pOpulation, compared with a rate of 86.0 in urban communities.4 These rates included all mental diseases, among them schiZOphrenia. It must also be borne in mind that use of the simplified 4Benjamin Malzberg, Social and Biological Aspects of mental Disease, (Utica: New York State Hospital Bress, I940). 20 definition leaves much to be desired, as the Census Bureau recognized in 1950 in changing the definition of urban to a more comprehensive definition. These general results were confirmed by the next census of the insane by the Bureau of the Census, which included data for 1922. An analysis of the place of residence of first admissions in 1922 showed that the urban population had a mental disease rate of 78.8 per 100,000 population compared with a rate of 41.1 for the rural population.5 In commenting upon the results of the 1922 census of the insane, the report stated: In general, these statistics indicate that there is relatively more insanity in cities than in county districts and in large cities than in small cities, although to some extent the differences may be accounted for by differences between city and county as regards the tendency to place cases of insanity under institu- tional care. The figures may also be affected in some degree by the agcident of location of the hospitals for the insane. Studies made in New York State in the 1930's show that the prOportion of admissions from a county in which a hospital is located is always greater than from other counties and that the proportion decreases with the 5Malzberg, op. cit., p. 83. 6Bulletin on the Insane and Feebleminded in Institu- tions, lublished by the Bureau of the Uensus, 1923. 21 distance from the hospitals. Malzberg claims that the influence of this factor upon the comparison between city and country, however, would not everywhere be uniform. He goes on to say that probably it does not go very far toward explaining the higher ratio of admissions from the urban population. Malzberg claims that it is undoubtedly true that the proximity of a hospital tends to affect the admission rate, but with the continued growth of hospital accomodations, the greater ease of transportation, and the establishment of hospital districts, the force of such environmental selection is weakened.7 Today, it might be concluded that modern transportation and communication is such that dis— tance from a mental hospital is rather meaningless in the determination of rates. In a study conducted in Texas in 1958, Jaco found an insignificant correlation between the incidence rates and number of psychiatric beds for the sub-regions. Consequently, he claims that the pattern of distribution of schizophrenic rates cannot be adequately explained by the availability of psychiatric facilities in different parts of the 7Mala-berg, pp. cit., p. 84. 22 state.8 In 1930 in the state of New York the average annual rate of first admissions with dementia praecox was 19.0 per 100,000 with a minimum of 9.8 in rural areas and a maximum of 22.6 in New York City. A partial explanation, of the variations, according to Malzberg undoubtedly re- sides in the greater ease with which certain types of mental patients may be cared for at home in rural sections and in some smaller cities.9 However, he presents this statement as a fact, but gives no empirical proof to support his statement. One could just as readily state that mental patients can escape detection and hospitali- zation better by residing in a big city slum area, than by living in a rural community where everyone is instantly aware of any unusual activity on the part of an individual. many authors have stated various reasons why they believe that the urban mental disease rate, and in particular the schiZOphrenic rate, is higher in the urban areas than in the rural areas. Meyerson, writing in the American Journal of Psy- chiatry, states that mental disorders appear to be more 8Gartly E. Jaco, "Incidence of Psychoses in Texas 1952-1953," Texas State Journal of Medicine, February, 1957, pp. 86-910 9 Malzberg, oo. cit., p. 85. __-L. 23 prevelant where the population is mobile and heterogeneous than where it is stable and homogeneous, and where life- conditions are complex and precarious rather than simple and secure. Hence, because the urban areas are composed of a mobile, heterogeneous, and complex society the ,. . 10 mental disease rate is higher. Lantz, in an article entitled "Population Density and lsychiatric Diagnosis," states that the mental disease rate is always higher in densely settled regions than in sparsely settled regions and hence the rural . — .5 . . . ._ 11 rate is lower than that found in urban areas. In his discussion of differences between rural and urban mental disease rates, Lemert argues that there can be little doubt but that the greater familism of rural peOple and the tendency of smaller communities 12 to handle problems informally is involved here. There may be Some validity for this statement where mild loAbraham Meyerson, "Review of Mental Disorders in Urban Areas", American Journal 2f rsychiatry, Vol. 96, march, 1940, pp. 995—997. llHerman R. Lantz, "ropulation Density and Psychi- atric Diagnosis," Sociology and Social flesearch, Vol. 97, Janua y-February, 1955, pp. 522-526. 12 - 1‘ ‘ " o 1 F‘ ' --. EdWin m. Lemert, "Legal Vommitment and SOCial Control," Sociology and Social Research, hay-June 1946. 24 forms of senile psycnoses are involved. However, it is necessary to reiterate the statement of Dunham and Faris13 that schizophrenic patients are so markedly mentally ill at the time of commitment that they can hardly be cared for at home, even if the members of the family desired to do so. To state that the greater familism of rural people and the tendency of smaller communities to handle problems informally explains the differences in rural-urban mental disease rates, if there is a difference, is in the Opinion of the writer an hypothesis for which there is no proof. Besides there is a tremendous difference in saying that the greater familism of rural areas might make a slight reduction in the schiz0phrenic rate than stating, as Demert does, that the greater familism of rural areas explains the difference. The former position might be tenuously held while the latter can hardly be seriously defended. In the journal, Social froblems, Burgess writes that the growth of cities has resulted in a number of changes in our institutions and social relations which would seem to exert an adverse influence on the mental health of the population, and hence produce a higher rate of mental disease. He claims that the effects of urbanization can be most readily perceived by con- trasting life in the city with the rural neighborhood. 13Faris and Dunham, 22. cit. 25 The change has been from low to high population density, from simple to complex and complicated social relations, from face-to-face intimacy to impersonal contacts, from primary to secondary social control, from a family centered economy to employment often in a gigantic industry, from a stable to an unstable home life, from the predominance of sacred to the growth of secular values. All these and other changes appear to have increased the stress and strain of adjustments in the city as compared with rural living. Burgess further says that certain aspects of urbanization, specifically, the greater complexity of living, the increasing instability of the family, the decline of the neighbor- hood, the growth of impersonal relations, loneliness and isolation, the slums of the city, the increasing tempo of city life, and the growing intensity of the struggle for success and the maximization of stimulus, seem to be related to the problems of individual adjustment and to a higher urban mental disease rate.14 This point of view is in essential agreement with Wirth's "Urbanism as a Way Life" written in 1958. Neither Wirth, nor Burgess present statistics showing differences in the urban-rural mental disease rate. They both seem to assume a priori 14Ernest W. Burgess, "Social Eactors in the Etiology and Irevention of Mental Disorders," Social rroblems, Vol. 1, 1953-54, pp. 53-56. 26 that these differences do exist between the rural-urban areas and that these differences of necessity do cause a higher mental disease rate in the urban areas. faris and Dunham, on the other hand, state that a relationship between urbanism and social disorganization and mental disease has long been recognized and demon- strated. fhey say that crude rural-urban comparisons of rates of dependency, crime, divorce and desertion, suicide, vice, and mental disease have shown these problems to be more severe in the cities, and espe— cially in the large rapidly expanding industrial cities.15 However, they produce no statistics from valid research to prove their contentions, at least in regard to mental disease. At best they should underline "crude rates." There have been a few studies that have produced different results. Lemert found that the urbanized in- dustrial counties in hichigan had lower rates of 16 schizophrenia than many non-urbanized counties. Schroeder and Beegle found that the farmers in michigan I? lbliobert u. L. Paris and H. warren Dunham, Mental Disorders in Urban Areas, (Chicago: University of Chicago Bress, 193§T. 16g . , ,q av_ w __, , a. h. m. Lemert, "AA haploratory study of mental Uls- orders in a Rural rroblem Area," Aural bociology, Vol. 15, October, l948, pp. 548-554. 27 had higher rates of suicide than peOple with city occupations.l7 nouser and Beegle have suggested that the nigh suicide rate of rural males is derived from the frus- tration and personal disorganization which have resulted from the conflict in the rural and urban values. They offer the hypothesis that the frustration and personal disorganization which have resulted from the conflict in the rural and urban values have been most among farmers where the rural way of life had been most satisfying, and consequently the most idealized.l8 However, as Earner states, suicide might be avoided by a psychosis or a neurosis.19 If this is true than the above state— ment of Houser and Beegle would be just as aprOpos to schizophrenia as to suicide and hence one would expect a high rate of rural schiZOphrenia. 17Widick W. Schroeder and J. Allan Beegle "Suicide: An Instance of high Kural Rates," Rural Sociology, March 1953, pp. 45-52. 18Schroeder and Beegle, gp. cit., pp. 45-52. 19William L. Warner, "The Society, The Individual and His Mental Disorders," AmeriCan Journal g£_Psychiatry, V01. 97, 1937, PP. 275-284- 28 20 conclude Mangus and Seeley in their study in Ohio that personality disorders occur as often among farm people as they do among non-farm residents, and per- haps more often. They claim that from the point of view of mental health, farm residence is probably an advantage for younger children, but that the advantage is lost with increasing age. They argue that this might be due in part to migration of disproportionately large numbers of better adjusted youths away from farms and from farm occupations. Loomis and Beegle in their book, Rural Sociology: The Strategy 2f_§hgggg, state that the incidence of mental ailment in rural areas is equal to or greater than that of urban areas, which is in essential agreement with the findings of Lemert. Lemert,22 in contrast to many of the studies done on rural-urban distribution, found relatively high rates in the predominately rural, sparsely populated Upper Tenni- sula of michigan. This finding contradicts Lantz's contention 20A. R. Hangus and John R. Seely, "Mental Health Needs in a Rural and Semi-Rural Area of Ohio," in Arnold M. Rose, Mental Health and Rental Disorder: A Sciological Approach, . New York, (N. w. Horton & Co., 19557 Pp. 205-214. 21 Charles P. boomis and J. Allan Beegle, Rural Sociology: The Strategy 3; Change, (Englewood Cliffs, N. J., Prentice- Hall, Inc., 1957 p. 351. 22Edwin H. Lemert, "An Exploratory Study of Mental Uis- orders in a mural froblem Area,"Rural bociology, Vol. l3, October, 1948, pp. 548—554. 29 that the mental disease rate is always higher in densely settled regions than in sparsely settled regions. These non-industrial, non-urbanized counties had higher rates than the Standard hetropolitan areas of the lower penn- isula. However, this writer believes that there are inaccuracies in Lemert's data that would change his results. hemert writes that he did not include the first admissions to the Veterans Administration hos- pitals because he included these men when they were admitted to the state hospitals. He forgot to add, however, that Veterans Administration patients are rarely admitted by the state authorities to state hospitals. Hence several hundred patients were omitted from Lemert's study and almost all of these, according to the writer's statistics, came from Standard metropoli- tan Areas in the southern part of the state. Hence one can readily observe that the information on rural-urban mental disease differences are contra- dictory and much more research in this particular area is needed. One can state from the information at hand that at this time no sweeping generalizations concern— ing differences can be made. 30 MARITAL DIFFERENTIALS Several studies have been done on the distribution of mental disease among the various marital groups; that is, differentials between married, separated, divorced, single, and widowed. Jaco23 found in Texas that the rates for both sexes were highest for the divorced, followed in order by the separated, single, widowed, and married. halzberg24 in his study of New York found that the married had the minimum standardized schizophrenic rate of 15.4, and the single had the maximum rate of 55.4, the latter being in excess at the ratio of 5.6 to 1. The divorced in his study had the high rate of 51.5, which did not differ significantly from that of the single. He found that the widowed population had an intermediate rate. In his study on mental disease and schizophrenia in particular, Dayton25 found that the married have the least chance of developing mental disorders of any marital group. The widowed, the single and the divorced, in increasing order, show a higher incidence of mental disorder. 23Gartly E. Jaco, "Incidence of Psychoses in Texas 1952—1955," Texas State Journal pf medicine, February, 1957, pp. 86-910 24Malzberg, 2p, cit. 25Neil A. Dayton, New Facts 2Q Mental Disorders, (Springfield, Ill. C. C. Thomas 00.,419407. 31 The evidence from various sources seems clear that the married pOpulation had much lower rates of schizophrenia than any of the other marital groups. Jaco believes that the fact that the divorced, separated, single, and widowed had higher rates than married persons lends support to Durkheim's concept of anomie. In psychiatric terms, the psychotic reaction to anomie can be described essentially as a loss or confusion of personal identity. EJuch a condition can feasibly, according to Jaco, be regarded as related to mental aberration as much as to such other symptoms of disorganization as suicide.26 The inference is that married peOple would not fall into a state of anomie as rapidly as the other marital groups. I-'.;owrer,27 on the other hand, writes that the fact that the rate for single persons is higher than that for the married does not necessarily mean tlat marriage tends to prevent mental disease. It may mean only that less stable personalities tend to remain unmarried. He claims that this interpretation seems all the more plausible when one observes that the divorced have the 26Gartly E. Jaco, "Social Factors in Mental Disorders in Texas," Social lroblems, April, 1957, Pp. 522-528. 27Ernest Mowrer, Disorganization—Tersonal and Social, (New York: J. D. bippincott Co. 19427. 32 highest rate, suggesting that when the unstable person— alities marry, they tend to get divorces, personality disorganization being an important factor in domestic discord. The widows and widowers in all the studies had a rate of schizophrenia between that found for the married and the single and divorced. halzberg28 thought it a matter of significance that widows and widowers had higher rates of mental diseases than the married. Since, according to malzberg, both groups had similar mental characteristics to begin with, the differences in rates of mental disease must be due to the sorrows and tribulations consequent upon the death of a closely related individual, and to the subsequent difficulties of economic readjustment on the part of the widows. 29 Jaco writes that widows and widowers have higher rates of schiZOphrenia because the husband or wife is no longer there to act as the buffer between the incipient mental condition and the prying eyes of a curious and unfeeling world. he also thinks that the psychoses might be precipitated by the shock of the 28 halzberg, 2p. cit. 29‘, ‘ :I "(V '- "n‘ ' 7’ .l "‘ bartly h. Jaco, ooc1al cactors in mental Disorders in Texas," Social rroolems, april, 1357, pp. 322-945. 33 death of a loved one. He also adds that often the necessity of living alone, the struggle of depending on oneself exclusively, and the many economic difficulties constituted too great a load to permit the preservation of mental balance. He states that in some cases, the strain imposed upon the spouse by the mental disorder in the patient was actually the cause of the widowhood. host of the studies found that the divorced had 'the highest rate of schizophrenia. It is possible that certain of these patients carried an incipient mental disorder into marriage and that the developing mental symptoms were the basic cause of the divorce. A second possibility involves persons who have been on the bor— derline of mental disease but who have been protected for years by the Spouse and when the spouse leaves with a divorce, the mental disease is brought out into the open. In a third group one might possibly find that the emotional disturbances incident to the divorce proceedings precipitated the psychoses. A fourth possibility is that the train of events follow— ing the divorce acted as a causative factor. Probably the majority of cases are combinations of the four situations. 34 While it is possible that a pre-psycnotic person may also be one who is likely to get divorced or remain single, it is equally possible that the marital situation may precipitate a predisposed individual into mental stress or conflict. This is a "chicken—or—the-egg” question. There is no need to seek a single cause, nor are multiple etiological answers necessarily invalid.30 In most of the studies on the distribution of schizo— phrenia the single persons had the second highest rate with only the divorced having a higher rate. However those who remain single throughout life have undoubtedly gone through a certain selective process, and hence a differ- ent rate is to be anticipated. One could hardly expect the single and married mental disease rates to be similar. AGE DIFFERBETIALS In the comprehensive studies done on the distribution of schiszhrenia, age was found to be a very important 31 characteristic. Among those less than 15 years of DOGartly E. Jaco, "Social Factors in Mental Disorders in Texas," Social Problems, April, 1957, pp. 322-328. 51See especially Neil L. Dayton, New Facts 2n Mental Disorders, (Springfield, Ill. C. C. Thomas 00., 19445 Benjamin Malzberg, Social and Biological Aspects of hental Disease, (Utica, N. Y: State Hospital Press, 194077 35 age schiz0phrenia is almost non-existent. Hence very few studies report on the incidence of schiZOphrenia below the age of 15. In the interval 15 to 24 Years of age, schizophrenia was the leading mental disease. It contin- ued to grow in frequency in the next higher age group 25-34. After 35 years of age the rate of schizOphrenia declines in frequency until the rate becomes very low after the 60th year and almost becomes non-existent in the older age groups of 604. In this particular area, age distribution of schiz0phrenia, the research reports have been consis- tent with one another and have reported the distribution as stated above.32 Hence we see that age is an important variable and any studies that do not standardize for age differences can be very misleading. NATIVITY DIFFERENTIALS Several writers have found that the foreign born population has a higher ratio of schiZOphrenia than the 33 native born. Malzberg, in his study in New York, 32See especially Neil L. Dayton, New Facts 22 Mental Disorders, (Springfield, 111: U. C. Thomas 00. 1940 Benjamin Malzberg, Social and Biological Aspects of Mental Disease, (Utica, N. Y.: State Hospital iress, 19457. 33Malzberg, pp. cit. 36 found that the native born has a standardized rate of 22.2 per 100,000 population, and the foreign born had a rate of 32.8. Dayton also found that the foreign born has a higher rate of schiZOphrenia than the native born. Both of these studies, however, were made more than a decade ago and halzberg's almost twenty years ago. nalzberg and Dayton both used pre-World War II data. Whether or not we have been having a different type of immigrant since World War II, who has a different type of social structure, and consequently a different mental disease rate, remains to be seen. SOCIO-ECONOMIC CLASS DIFFERENTIALS There has been a lot of research in recent years on the distribution of schizophrenia by social class and occupation. The most prolific writers in this area have been Hollingshead and Hedlich who have been doing their research in New Haven, Conn. First, Hollingshead and his group of sociologists delineated the class structure of New Haven; second they interviewed, as controls, a five percent sample to the com- munity's population; third the team took a census of psychiatric patients; fourth, both the sample popu- lation and the psychiatric patients were classified 37 into five socio-economic strata.34 To delineate the class structure hollingshead and his fellow sociologists devised a classification of five social levels, based on three factors: education, occupation, and the person's place of residence. a patient in Social Level one, for example is a person with a college education, holds a top pro- fessional or executive job, and lives in a well—to-do residential area. The classification drOps prOportionally through five groupings so that a patient in Social Level five is a person with an elementary (or less) education, is a semi-skilled or unskilled worker, and lives in a poor section of the community.35 The association between social class and prevalence of schizophrenia in the community's population was measured by an Index of Prevalence so constructed that if the number of patients in a class was proportionate to the total population of the class in the community the index would be 100. Instead of an equal distri- bution of patients by class the following pattern was found. In class I the index figure was 23, in class II 33, 34August B. Hollingshead and Frederick C. Redlich, "Social Stratification and Schizophrenia," American Sociological deview, Vol. 19, pp. 302-306. 55"Scniz0phrenia and the Class Structure," Science Digest, August, 1952, p. 32. 38 in class III 48, in class IV 84, and in class V 246.56 The proportion of schizophrenics is 11 times greater among patients in Social Level five than among patients in Social Level I. One can conclude that Hollingshead and Redlich found that there are definite connections between particular types of social environments in which people live, as measured by their social class rating, and the emergence of particular kinds of psychiatric disorders, as measured by psychiatric diagnosis. They found a very significant inverse relationship between social class and schizophrenia.37 Hollingshead and Redlich disproved the hypothesis that the lower social classes have a higher rate of schizophrenia because of a drift to the lower classes by members of the higher classes when they become psychotic, by showing that 91% of the patients in their study were in the same class as their parental families; further that there is a much greater mobility upward than downward 36August B. Hollingshead and Frederick C. Redlich, "Schizophrenia and Social Structure," American Journal pf .Esychiatry, Vol. 110, pp. 695-701. 37August B. Hollingshead and Frederick C. Redlich, "Social Stratification and lsychiatric Disorders," American §§ociologica1 Review, Vol. 18, pp. 163-169. 39 within the small minority who do change their class positions. This study clearly shows that few schizo- phrenics move downward in class level.38 This study also showed that the lower the class, the greater the tendency for schiz0phrenic patients to reach the attention of a psychiatrist through the instrumentality of the law.39 Tietze, Lemkau, and Cooper in their study of mental disease and socio-economic status also found that there is relatively more schizophrenia in the "lower" social- economic groups. They found that among workers and farmers schizophrenia is much more common than manic—I depressive psychosis, whereas in the business and the professional group more manic-depressive than schizophrenics are found.40 In a study of 12,168 male first admissions from Chicago to public and private mental hospitals, Clark shows that the age adjusted commitment rates by 38August B. Hollingshead and Frederick C. Redlich, "SchiZOphrenia and Social Structure," American Journal 2; Bsyghiatry, No. 110, pp. 695-701. 391bid. 4OChristOp-her Tietze, Paul Lemkau, and harcia Cooper, ”Schiz0phrenia, Manic-Depressive Bsychoses and Docial-Economic Status," American Journal pf Sociology, Vol. 48, pp. 167-175. 4o occupational groups are negatively correlated with the factors of occupational income and occupational prestige. He found that there is a real association between high income and high prestige, on one hand, and low psychosis rates on the other hand. The findings of Clark, as those of HOllingshead, medlich, Tietze, Lemkau, and COOper, indicate that the occupational—psychoses rates fall into a pattern with an inverse relationship between psychoses rates and the factors of occupational income and occupational prestige.41 Jaffe and Sharas in a study done in 1939 subdivided the population into two economic classes. The one "class," the term they used, consisted of single-home and two-flat buildings, with an equivalent median rental under $50 per month. The other "class" consisted of single-home and two-flat buildings with an equivalent median rental over $50 per month. They found that the poorer person's chance of being admitted to a hospital for schiZOphrenia was greater than that for the higher class.42 41Robert Clark, "Psychoses, Income and Occupational Prestige," American Journal 2; Sociology, Vol. 54, 1954, pp. 433—440. 42A. J. Jaffe and E. Shanas, "Economic Differentials in.the Probability of Insanity," American Journal 2: Sociology, Vol. 44, 1944, pp. 534-539. 41 hafmli DISOhDFRS IN URBAN PLACES The first comprehensive study on the distribution of mental disease in an urban place was done by Faris and Dunham in Chicago.43 They found that "insanity areas" do exist within a city. One of their major findings was that the schiZOphrenic cases showed a high degree of con- centration at the center of the city. They found that there was an inverse relati nship between distance from the center of the city and the rate of schizOphrenia. Their work was duplicated in many other cities. In St. Louis, Milwaukee, Omaha, Kansas City, and :ecria the same results were ob- tained. While there is some variation among the cities, probably to be expected in communities of varying size and situation, still there is sufficient evidence to support the conclusion that insanity areas exist within cities.44 SOCIOLOGICAL THBWRIBS ON THE BTIOLOGY OF SCHIZOPHRENIA Several sociologists have attempted theoritical formulations to the etiology of mental disease. Read Bain, a sociologist, speaks of "Our Schizoid Culture," and regards irrational contradictory norms of America as "neurotic and psychotic societal behavior." Other sociologists, 43Faris and Dunham, pp. cit. 44Charles W. Schroeder, "Mental Disorders in Cities," American Journal Sociology, Vol. 48, 1948, pp. 40-47. 42 also state the idea that the exposure of an individual to conflicting or contradictory norms and values renders him especially prone to schizophrenia. For example, Green writes, "A consistent view of self is not easy to maintain when——-as is especially characteristic of our large cities——-sexual, ethical, family, and community standards glaringly contrast as one moves from one group to another. Upon accepting an invitation to dinner at the home of a new acquaintance, one must often be pre- pared either to bow one's head while grace is said or to accept a cocktail and laugh at a smutty story. A psychic readiness to adapt to ever changing situations is not for some a source of personality conflict, but for others it constitutes a painful compromise with l.45 self. He states that the diversity and inherent contra- dictions of modern AmeriCan urban culture and productive of personality conflict, which can result in schizophrenia.46 Of the several hypotheses relating the frequency of mental disorder to social conditions, none has been more persistently enunciated, than that which proposes that schiZOphrenia is the outgrowth of social isolation; and no one has been as profuse in writing about it as 45Arnold W. Green, Sociology, (New York: McGraw—dill Book 00., 1956) p. 150. 46 Ibid., p. 151. 43 R. E. L. Paris.47 more recent statements have suggested that isolation is a result of incongruent intra—familial and extra—familial orientations toward the child and represents a stage in a "typical process" for schizo— phrenics. This "typical" process for schiZOphrenics is said to involve the following stages: Tarental oversolicitude produces the "spoiled child" type of personality; and leads to a certain isolation from all but the intimates within the family. The next stage is persecution, discrimination or exclusion by children outside the family. The most usual reaction to this persecution is to feel unhappy but with no immediate depreciation of establishing friendships. Often the children try for years to make friends. Eventually there is a resignation---a withdrawal from a hopeless goal. From this time ofi'their interest in sociability declines and they slowly develop the seclusive personality that is characteristic of the schiZOphrenic. They confine their social activities to their own families, or take increased interest in read- ing, music and art. 47Robert E. L. Paris, Social Psychology, (New York: The Ronald Press, 1952). 44 Finally, the symptoms of schiZOphrenia are ascribed to the lack of social experience in the person so isolated. Not being experienced in intimate personal contacts with a larger number of other persons he is deficient in his understanding of the reaction of others and responds unconventionally and inappropriately to them. He mistakes unintentional slights for active persecution. He interprets his own failure as due to interference by others.48 One of the most commonly emphasized characteristics of pre-schiZOphrenic life is a parent (usually the mother) who is variously characterized as over-protective, domin- eering, over anxious, over solicitious, inconsistent and ambivalent toward the patient as a child. The importance of the "domineering, over-protective mother," in the etiology of schiZOphrenia does not neces- sarily rest upon a Freudian conceptualization, however, and most investigators who have emphasized the mother- child-relationship in pre-schizophrenia have not done 49 so within a specifically Freudian framework. 48Melvin L. Kohn, and John A. Clausen, "Social Iso- lation and Schizophrenia," American Sociological Review, Vol. 20, 1955, pp. 405-410. 49William F. Ogburn and Meyer F. Nimkoff, Sociology, (New York: Houghton hifflin Co., 1950). 45 However there has been no proof that such frustrations have a part in the etiology of schizophrenia, nor even that such frustrations are "associated with" schiZOphrenic psychosis.SO The concentration of schizophrenia in the lower social strata of society is consistent with an hypo- thesis which emphasizes the frustration of aspiration, the loss or denial of a complimentary status and the "self blame" that sometimes accompanies them. Such an hypothesis is also consistent with some case study materials and anthropological data.51 Bleuler states that "... the overt symptomatology certainly represents the expression of a more or less successful attempt to find a way out of an intolerable situation...".52 O . 4 . . 5 Herbert L. costner, "Differential Rates of hos- pitalization for schizophrenia in a Aural rcpulation," Unpublished ml Thesis, Ind. U., 1956. 51herbert L. Uostner, Ibid. 52'“fi g3 ‘, ° .. 7“. w \ hugene Bleuler, nementia rraecox, 93 the broup _§ Schizo4hrenias, anglisn edition translated by Joseph zinken, (New York: lnternational U. Press, 1950) p. 460. 4o Emile Durkheim's analysis of suicide statistics shows that there is social support ot individuals who undergo severe personal trauma, and that suicide rates are a function of anomie——-the absence of such social 53 As was stated before Durkheim was able to support. demonstrate that certain kinds of suicide (and mental disorders should be added) were due to the fact that society itself had partly disintegrated, and the in- dividual who formerly had a satisfactory adjustment to the society could no longer adapt himself, even though he made what had once been the proper responses. Such an individual "feels like a fish out of water" and one course of action for him is suicide. However, 54 suicide might be avoided by a psychosis or neurosis. 53- Emile Durkheim, Suicide, Translated by John A. Spaulding and George Simpson, (Glencoe, Ill: The Free Press, 1951). 54William L. Warner, "The Society, The Individual and His Mental Disorders," American Journal 2f_rsychiatry, Vol. 94. 1937. pp. 275-284. ClarTLR IIl ANALYSIS OF DATA Five major factors influencing the magnitude and trend of schizophrenic rates are considered. These factors, namely, age, sex, marital status, nativity, and area of residence, are functionally significant in relation to differential schiZOphrenic rates observed among first admission patients. As stated previously the rates for the state of hichigan are based upon first admission Cases of schizo- phrenia from the records of the two largest private mental hospitals, all of the state institutions, and the Veter- ans Administration Hospital at Battle Creek, for the years 1949, 1950 and 1951. The population of hichigan as reported by the 1950 census Was multiplied by three to give a comparable population base.1 The pOpulation was divided 1This of course could result in a slight margin of error as the population thus obtained may not be the exact population for those three years. However as the figures dealt with are very large it is assumed that the margin of error would be too slight to seriously affect the results. The writer is aware that similar results could have been obtained by using the 1950 population as the base and then dividing the result by three. However it is the opinion of the writer that the former method is more accurate, even though the rates obtained from both methods do not vary more than .01 per 100,000 population. 48‘ into the number of schiz0phrenics and then multiplied by 100,000 to secure the Various rates. Hence the rates discussed below represent the number of schiZOLhrenics per 100,000 persons in the state of Michigan. ggg in order to obtain a clear indication of the distri- bution of schiZOphrenia according to age, the population was divided into six separate age categories (l5-24, 25-54, 55—44, 45—54, 55-64 and 65 and over). Bates were then computed for each age group. The hypothesis with respect to age composition is that the probability of acquiring schizophrenia is not random throughout the pOpulation. Hence, the hypothesis would lead us to expect variations in the rate of schizo- phrenia by age. The results show that the age group 25-34, with a rate of 45.00, has the highest incidence of schiZOphrenia. See Table I. A steady decrease is shown in every sub- sequent age group, the lowest rate being 7.56 in the b5 and over age group. The l5-24 age group exhibits the third highest rate, of 59.68. 49 TABLE I CRUDE SCHIHOIHRJNIC RATE BY AG; IN THE STnTE OF MICHIGAN 1949-50-51 AGE GROUP RATE OF SChIZ. :ER 100,000 POP. 15-24 30.68 25-34 45.00 35-44 53-52 45-54 18.92 55364 11.82 654 7.36 Table I shows that there is a very rapid drop in the rate of schizophrenia after the age of 44. The results show conclusively that middle age and older people are not as suceptable to schiZOphrenia as young adults. It is necessary to point out that children and early adoles- cents were not included in this study because schizo- phrenia is relatively infrequent among these age groups. The results validate the hypothesis, as stated, that the rate of schiZOphrenia is not random throughout the pOpulation by ten year age groups.2 The results obtained 2In studies of this type, statistical analysis is not used to determine whether or not a difference between two or more figures is significant. Since the whole universe was used and not a random sample of the universe, differences appearing are considered to be real differences. We are not arguing here for Hana C. Selvin's position, as stated in his article, "A Critique of Tests of Significance in Survey Research" 50 are similar to almost all studies done on the age distri- bution of schiziophrenia. In a study done in New Jersey, Frankel found the highest incidence rate to be in the 25-54 age group.3 The same general results are reported 2Continued Vol. 22 of the American Sociological Review of Oct., 1957, however correct or incorrect he may be, when he says that the conditions under which, "... tests of significance may validly be used are almost impossible of fulfilement in sociological research..." The writer is agreeing only to the extent that in this particular work such large population figures are used that any test devised will show practically any difference to be significant. As Selvin states, "A l per cent difference may be significant at the .001 level if the Sample is large enough, yet such a small difference is essen- tially meaningless for sociology at present." Hence, rather then expend effort on tests that will show a significant difference no matter what the results are, statistical devices were not utilized. Selvin does mention the suggestion of Margaret J. Hagood and Daniel 0. :rice in their book, Statistics for Sociologists, that total populations be considered as "samples" from still larger hypothetical universes of possibilities. However Selvin says that, "This concept is difficult to grasp in- tuitively, and it is largely unnecessary...". He states further that tests of significance are useless and meaning- less when used to test the difference of survey projects that take in the whole universe and not just a random sampling of a universe. 3Ernest Frankel, "Outcome of Mental—hospital Treatment in New Jersey; A Statistical Review of State mental Hospital Activities," Mental Hygiene, Vol. 52 (July, 1948) p. 461. 51 in numerous other studies. Landis and lage,4 in a study using data from all the state mental hospitals in all the states of the United States, found that the age group from 20-40 had the highest rate of schizophrenic incidence. Ealzberg? using data from all institutions for mental disease in New York from 1929-51, follock6 using data from New York institutions for the mentally ill from 1912-18, Slater7 using data from mental hospitals in England and Wales in 1932, and fidegaardB using data of Norwegian born immigrants in the dochester State Hos- pital District of hinnesota, 1889-1929, all conclude 4Carney Landis and James D. Page, Modern Society and Mental Disease, (New York: Farrar and Rinehart, Inc., 19387 pp. 44 & 163. bMalzberg, gp. cit. 6Horatio M. Pollock, "Frequency of Dementia Fraecox in Relation to Sex, Age, Environment Nativity, and Race," Mental Hygiene, Vol. 10, (July, 19263 p. 598. 7E. Slater, "The Incidence of Mental Disorder," Annals pf Eugenics, V01. 6, (1934-1955), p. 180 80. fidegaard, "Emigration and Insanity: A Study of Mental Disease Among the Norwegian Born fopulation of hinnesota," Acta Fsychiatrica gt Neurologica, Vol. 5, 1932 . 52 that the 20-40 age group is productive of the highest rate of schiz0phrenia, with the very highest rates in the late twenties and early and middle thirties. §;§_ . Another hypothesis, stated earlier in this study, was that females in Michigan have a higher rate of schizo- phrenia than males. The findings in previous research has been inconsistent as to whether males or females have higher schizophrenic rates. In conformity with the hypothesis tnat urban centers have a higher rate of schizo- phrenia than rural areas, one would hypothesis that females will have a higher rate of schizophrenia than males. The reason for this is that urban areas have a low sex ratio and the rural areas a high sex ratio. Hence one would expect females to have a higher ratio of schizophrenia than males. Urban, rural-nonfarm, and rural-farm sex ratios in nichigan in 1950 stood at 99, 104, and 114 for the three residence groups, respectively.9 As shown in Table II, females in Michigan for the years reported had a higher rate of schiZOphrenia than males. 9J. Allan Beegle and Donald Halsted, "Michigan's Changing ropulation," Special Bulletin 415, June, 1957, hichigan State University Agricultural Experiment Station, E. Lansing, hich., p. 25. 53 TABLE II SQhIZUIHRhEIC AATSQ BY SEA IR T53 anTJ OF hICnIGAH 1949-50-51 SI‘JX ital; VE‘ 421/1112] o .1. 1.323. 100 LUOO .EIOJ.’ o Hale 27.30 27.58 Female 28.61 28.48 As indicated in Table II the crude rate for females is 28.61, or 1.51 per 100,000 higher than for males. When the rates are standardized for age there is only a slight change in the rates. As can be seen from Table II the standardized rate for females was 28.48 which re- presents a difference of .90 per 100,000 over the male rate of 27.58. A difference of .90 between the two figures is so slight that one can doubt the meaningfulness of the difference, and conclude that sex was not a very important factor in the schizophrenic rates in the years 1949, 1950 and 1951. As stated before, the findings have been inconsistent as to whether or not males have higher schizophrenic , . . , - lO rates than females. In tne studies by Landis and tags, lOLandis and Page, 92. cit., pp. 44 a 163. 54 12 it was found that males by Malzberg,ll and by Pollock had higher rates than females. however in a study of state hospitals in Georgia, Green and Jacob13 found that females had a higher rate of schiz0phrenia than males. Slaterl4 in his studies in England and Wales, and fldegaard15 in his studies of Norwegian immigrants both found that females had higher rates of schiz0phrenia than males. Hence, the fact that this study in Michigan revealed a small differ- ence between the sexes is consistent with previous research in that neither sex has had a consistently higher schizo- phrenic rate. Whether or not the hypothesis, as stated above, has been validated is Open to dispute. Ihe writer's conclusion is that it has not been validated since the llhalzberg, pp. cit., p. 80. 12 Pollock, 9p. cit. p. 598. 13J. E. Greene and J. S. Jacob, "Conditions in the hilledgeville State Hospital (Bulletin of the University of Georgia, No. 9a, Vol. XXXIX Athens, Ga., July, 1939) Pp- 32-33- l4Slater, op. cit. 15fidegaard, pp. cit. 55 difference of only .90 per 100,000 population is not sufficiently large. A difference of this slight magnitude may be due to the human element involved in collection and compilation of data. NATIVITY Throughout the literature on schizophrenia one finds consistent reports that the foreign born population has higher schizophrenic rates than the native-born population. In this study, however, the crude rates show a tremendous difference, with the foreign-born having a much lower rate than the native-born. See Table III. TABLE III SCHIZOIHRJHIC RATES bY NATIVITY IN THE STATE OF A MICHIGAN 1949-50-51 NATIVITY BATH CF :CHIZ. 13R 100,000 POP. CRUDE RATES AGE STLHDARDIZED RATES Native-born 29.65 28.25 Foreign-born 18.49 25.91 The crude rates show a very large difference of 10.16 per 100,000 between the native-born and foreign- born. When the rates are standardized for age, as could anticipated, the native-born rate declined while the 56 foreign-born rate increased by more than 7.00 per 100,000. See Table III. Lven after standardization, the native—born popula— tion has a higher schiZOpnrenic rate than the foreign— born, and this is contrary to the findings of other studies. In his study of the New Iork state hospitals, Lialzbergl6 found that the native-born had a schiz0pnrenic rate of 22.2 while the foreign-born had a rate of 52.8. Hence he found that the foreign-born had a very substantially higher rate than the native-born, a difference of 10.6 per 100,000. Pollock}7 in his study done in 1926, found that the native-born had a schiZOphrenic rate of 12.2 while the foreign-born had a schiz0phrenic rate of 26.8. Again in this study a very large disparity between the native- born and foreign-born rates is shown. mven after standardization, the native-born popula— tion of hichigan has a higher schiz0phrenic rate than the 16 Malzberg, pp. cit. l7Horatio M. Pollock, "Frequency of Dementia iarecox in Relation to Sex, Age, Environment, Nativity, and Race," Mental Hygiene, Vol. 10, (July, 1926) pp. 596-611. 57 foreign-born. In view of previous evidence, it would seem all the more unusual that in Michigan the foreign- born has a lower rate of schiz0phrenia than the native- born. LARITAL STaTUS The rates of schiz0phrenia according to marital status in this study in general follows the findings of previous research. As can be seen in Table IV, the divorced had the highest crude rate, 82.45, the separated the second highest 80.19, followed by the single with a rate of 52.56. The widowed had a lower rate (15.50 per 100,000) than the married (17.71 per 100,000 population). TABLE IV SCHIZOIHRENIC RATES BY MARITAL STATUS IN THE STATE OF hICHIGhN 1949-50-51 MARITAL STaTUS RATE OF SCHIZ. BER lO0,000 POP. CRUDE RATES AGE STARDARDIZED RATES Divorced 86.90 85.25 Separated 80.19 75.25 Single 51.54 65.92 Married 18.20 17.54 Widowed 15.10 52.70 58 When the rates are standardized by age one major change occurs, namely, that the rates of the widowed rose from 15.10 to 52.70. As can be seen in Table IV, even after standardization, the divorced and separated still have the highest rates. The rates shown in Table IV in general are supported by the findings in almost all studies of schizonhrenia. Several studies, however, have found that single persons l have the highest rate of schizophrenia. In this study, however, the single have a considerably lower rate than the separated and the divorCed. The hypothesis that the married persons in michigan vill have a lower rate of schiz0phrenia than the single, separated, divorced, or widowed has been validated. These results emphasize the fact found in many other studies that the married element in our society has consistently lower rates of schizophrenia than the other marital status groups in our society. Leta Adler, writing in Social Forces, states the hypothesis that, "The emotional security and social stability afforded by . . . .1 - 18 married life makes for low inCidence of mental illness". 18" . , . l. u . . Leta Adler, ”The Relationsnip of marital Status to Incidence of and Recovery from mental Illness," Social Forces, Vol. 52, December, 1955. 59 whether this is true gr whether the low incidence of scniz0phrenia among the married element is due to a selective prOCe"S prior to marriage is a debatable point. It could, however, be a combination or both. The higher schiZOphrenic rate of the widowed would tend to support the hypothesis that marriage does produce emotional security. When one marriage partner is removed through death one finds less emotional stability as measured by schiZOphrenia. Bellin and Hardt19 state that, ... loss of spouse may be viewed as tending to disrupt the established modes of satisfying a variety of needs, as well as establishing with traumatic import the recognition of one's own mortality. Futhermore, bereavement introduces a new social role, widowhood, not only is this role generally evaluated negatively, but the normative expectations attached to it are vague and contradictory. To the extent that some selection of individuals into the single and divorced groups takes place on the basis of their lack of personal adjustment the differences in the rates of mental disorder between the single and divorced and the married groups may have little to to with the differential stresses and satisfactions intrinsic to the Various marital statuses. It is much less obvious as to how the married and the widowed categories may be differentially selectivSO of individuals on the basis of mental disorders". 20Bellin and Hardt, gp. cit., pp. 155-162. 6O AREA As stated in chapter I and II, the findings on urban and rural differences in mental disease rates have not been consistent. In attempting to clarify the situation, the writer divided the state into areas on the basis of their proximity to Standard Metropolitan Areas, assuming that if a definite urban-rural difference exists that the difference would appear between the areas delineated. Hence, the state was divided by county units, into three categories. One category consists of all Standard Metropolitan Areas, that is, all counties having a city of at least 50,000 pOpulation within its boundaries, or has met other specified qualifications set forth by the census bureau in 1950. Another category consists of all contiguous counties, that is, counties that had a Standard metropolitan Area on any of its borders. The third category consists of all non-contiguous counties, that is, counties that did not have a Standard Metropolitan Area on any of their borders. It has been stated repeatedly that there is a marked difference in rural and urban life patterns, with rural society having much more cohesion or integration than the 61 urban society, and that more anomie exists in urban society. Dy anomie is meant that the ends of action become contradictory, inaccessible or insignificant. It is characterized by a general loss of orientation and accompanied by feelings of "emptiness" and apathy.21 Durkheim in his monograph on suicide22 was one of the first sociologists to state the principles of social integration and anomie. At no point in Durkheim's comments is there an explicit connotative definition of social integration, much less an Operational definition. Running throughout Durkheim's comments on the nature of social integration is the suggestion that the concept has to do with the strength of the individual's ties to his society. In formal terms, the stronger the ties of the individual members to a society, the lower the schizo- phrenic rate of the society.23 Some authors claim that despite the fact that rural lg . . a . . . . hlw1n H. rowell, "Occupation, Status, and buiCide: Toward A Redifinition of Anomie,“ American Sociological Review, Vol. 25, April, 1958. Emile Durkheim, Suicide, Translated by John A. 22 Spaulding and George Simpson, (Glencoe, Ill: The Free Press, 1951). 2 v"'v '1 ' ~. ' ' 3Jack F. 01008 and Halter N. Martin, "A Theory of Status Integration and Its Relationship to Suicide," American Sociological Review, Vol. 25, April, 1958. 62 and urban "worlds" are merging, and that the rural society presents wide variations, it can still be said that rural life partakea more of the characteristics of the familistic Gemeinschaft, and urban life of the contraCtual desellschaft.24 hence Leacock suggests that one might be led to expect much more integration in the rural areas.25 She continues that there 18 greater precision and stability in social rOles in rural society, less marked status striving, more intimate and personal forms of authority, greater security of primary group ties, the specification of norms for all life situations, and that the relative homogeneity of the rural population reduces the risk of value conflict. Hence, there would be more integration in the rural areas and less in the urban areas.26 many others have written about the supposedly higher rates of mental disease in urban areas due to a lack of integration. Leighton writes that, "... psychiatry on the one hand and the social sciences on the other were re- 24For a clear exposition of the concepts Gemeinschaft and Gesellschaft see; F. Toennies, Fundamental Concepts 2; Sociology: Gemeinschaft and Gesellschaft, translated and supplemented by Charles P. Loomis, New York, 1940. 25Eleanor Leacock writing in, "Explorations in Social Psychology, edited by Alexander H. Leighton, John A. Clausen and Robert N. Wilson, (New York: Basic Books, Inc., 1957) p. 314. 26 Ibid., p. 316. 63 cording from different points of view the difficulties involved in adjusting to our contemporary urbanized and industrialized form of life. The city became the sinner and was compared to a somewhat ideal version of rural living. 'The rural codes and customs have direct I and sustaining influence; wrote the author of a text- book on rural sociology in the forties, 'Life is personal and its crisis call out personal responses from neigh- bors. There is thus less chance of maladjustment then in the city, where primary groups do not come to the aid '"27 Gist and halbert28 write that there is reason to of the distressed. believe that the urban milieu is more conducive. to mental disabilities than rural society and that there is reason to believe that the urban type of social structure does lead to a higher rate of mental disease. Clinard writes about the impersonality and lack of social integration of the urban world as producing a type of society which seemingly is more prone to 29 mental disorders. 27 28Noel P. Gist and L. A. Halbert, Urban Society, (New York: Thomas Y. Crowell Company, 4th ed. 19567. dgMarshall B. Clinard, Sociology of_Deviant Behavior, (New York: Rinehart a 00., Inc., 1957). Leighton, Clausen, and Wilson, op. cit., p. 516. 64 If it is true, that urban areas have less inte— gration than rural areas, and if a lack of integration can cause mental disease, as stated by several authors referred to in chapter two, then we can hypothesize that the rate of schizophrenia will Vary directly with the amount of urbanity. It was felt that if there was any relationship between an urban like environment and the rate of schiZOphrenia that this relationship would probably appear in different rates for the different social categories. One hypothesis stated was tmat the rate of schizo— phrenia in hichigan would be higher in Standard Metro- politan Areas than areas outside such Standard metropolitan Areas. This hypothesis is supported since ooth the crude and standardized rates were higher for the Standard metropolitan Areas than for the other areas. See Table V. 65 TnBLE V SCflILOTZRLfiIJ 3414 BY nBJA IN THEgaTAlE 0F “ICnIGAN 1949-50-51 CiUDE RaTES AGE STaIDnXDIZED RATES S. h. A. 30.75 30.13 Contiguous Counties 20.96 21.36 Non-bontiguous Counties 24.89 26.83 The crude rates show the btandard Metropolitan Areas having a 9.59 rate higher than the contiguous counties and 5.86 rate higher than the non-contiguous counties. Similar results remain after standardization for age differences as Table V shows. Due to age standardization, the Dtandard Metropo- litan Area rate decreased very slightly, or a drop from 30.75 to 30.13 per 100,000. The other categories had a slight increase, with the non-contiguous counties having the highest increase of all. The contiguous counties increased from 20.96 to 21.36, a very slight increase of .40 per 100,000. The non-contiguous counties, however, had increased fron 24.89 to 26.83, an increase of 1.94 per 100,000. 66 Another hypothesis stated was that the rate of schiz0phrenia in Michigan would be higher in counties contiguous to Standard Metropolitan Areas tgan in those counties non-contiguous to Standard Metropolitan Areas. This ypothesis was not validated by the results of the study, as can be seen from Table V. The contiguous counties had a crude schiz0phrenic rate of 20.96 while the non-contiguous counties had a crude soniZOphrenic rate of 24.89. Hence the non-contiguous counties had a crude schizophrenic rate of 3.98 higher than the contiguous counties. When the rates were standardized they not only did not come closer together but the non-contiguous county rate increased more than the contiguous county rate as can be seen in Table V. Hence the hypothesis stating that the rate of schizophrenia in Michigan would be higher in counties contiguous to Standard Metropolitan areas than in those counties non—contiguous to standard Metropolitan areas has not been validated by the results of the re- search. Ihis would seemingly mean that the major hypothesis stating that the probability of acquiring schiZOpnrenia Varies according to urban and rural residence has not been validated by the evidence given here. While it is 67 true that the Standard metrOpolitan Area category had a higher schiz0phrenic rate than the other categories, the fact that the contiguous counties had a substantially lower rate than the non-contiguous counties would seem to indicate that the probability of an area having a high or low schiz0phrenic rate does not necessarily depend upon its urbanity as expressed by distance from large metro— politan areas. One may say that the differences found between the areas might be due to differences in sex ratio or more importantly due to the different marital composition of the various populations. To determine if these could have any appreciable effect upon the rates, all areask were standardized for sex and marital composition. If we standardize the various areas for marital status the difference between the areas still remain as can be seen in Table VI. TABLE VI MARITAL STATUS STANDARDIZED RATES BY AREA IN THE STATE OF LICHIGAN 1949-50-51 AREA RATE OF SOHIZ. TER 100,000 POP. 801‘;vo 29°93 Contiguous County 20.61 Hon-Contiguous 23.71 I‘ll 'lIT IV Ill I {I'll l 'I'Illl lull Al I II.“ I 68 Hence we can see that if marital status is taken into consideration the specific rates change slightly, but the general differences between areas still remain. If we standardize the various areas for sex the differences between the areas also remains as can be seen in Table VII. ThBLm VII SEX STnhDafluIZED flaTnb BY ARha IN THE STATE OF hICflIGAN 1949-50-51 ahEh iaTh 0F bofilz. 133 100,000 :0r. 8.m.a. 30-74 contiguous counties 20.95 Non-Contiguous 24.87 Table VII indicates that if sex is taken into con- sideration the specific rates again change slightly but the general differences betaeen the areas still remain. 1'his study has demonstrated that the schiz0phrenic rate in Hichigan does not have a direct relationship to urbanity. 69 CHAPTER IV SUMHARY AND CONCLUSIONS The empirical basis for this study of schizo- phrenic differentials in Michigan consisted of 3,881 first admission schiZOphrenics. The data were obtained from all the State Mental Hospitals, the Veterans Administration Hospital at Battle Creek, and the two largest private hospitals in Michigan for the years 1949, 1950, and 1951. These data were coded and punched on IBM cards and analyzed by machine methods. The following information was utilized in this study; county of residence, age, sex, nativity, and marital status. In the analysis of data for Michigan it is assumed that a statistical analysis of schiz0phrenia is meaningful. The author does not agree with the contention of some workers that the data are too inadequate to merit credence. Perhaps, some cases of schiz0phrenia have been concealed. It is felt however that the data collected are representative of the entire universe. 71 In this report Durkheim's theory of anomie was hypothesized as having a functional relationship in producing a higher rate of schiZOphrenia in urban places. Various authors were quoted stating that with an increase in urbanism there is an increase in social disorganization, and consequently an increase in schiz0phrenia. Therefore, one hypothesis stated was that there is a direct relationship between urbanity and the rate of schiZOphrenia. To test this hypothesis the state of hichigan was divided into three separate areas, all three areas being in different stages of urbanization. The criterion of urbanization used was the nearness to, or the inclusion of, a Standard hetropolitan Area. The above stated hypothesis was not validated as the data did not show a direct relationsnip between urbanity and the rate of schiz0phrenia. Hence one is led to the conclusion that urban living per se is not more conducive to mental illness than rural living. another hypothesis stated was that the incidence of schiz0phrenia is not random throughout the population 72 in regard to marital status, nativity, sex, and age. The population of the state of michigan and the schiZOphrenics were subdivided into 10 year age groupings. It was found that the rate of schizo- phrenia was highest in the age group 25-34, and that there was a real difference in the rates between all the age groupings. The schiz0phrenic rate declined steadly after the 25—34 age group, with every sub- sequent age group having a lower rate of sohizoyhrenia than the one preceding it. The population of the state of michigan and the schizophrenics were separated by sex, 'fld the age stan— dardized rate for each sex computed. It was found that the difference between the sexes was so slight that it was not considered to be a real difference. The females had a slightly higher (.90 per 100,000 pOpulation) rate than the males. The population of the state of Michigan and the soniZOphrenics were also separated on the basis of nativity. Separate schizoyhrenic rates, age standard- ized, for the native born and the foreign born 73 population were computed. It was found that there was a real difference between the native born and the foreign born rates of schiZOQhrenia, with the foreign born aving a substantially lower schiZOpnrenic rate than the native born. The pOpulation of the state of hichigan and the schizophrenics were separated on the basis of marital status. Separate age standardized schiZOphrenic rates for the various marital groups; divorced, separated, single, widowed, and married were computed. The results show that the divorced had the highest rate followed by the separated, single, widowed, and married. The writer therefore found that the incidence of schizophrenia is not random throughout the popu- lation in regard to marital status, nativity, and age. However, in the author's opinion, no real differ- ence in the incidence of schizophrenia was found between the sexes. 71L Lb I-‘i U 7 U P! O p _. t‘, .— P1 » l i4 9 Pr9ecox, or the Groun of Seiizo~nrcn cs nslsted by Josczh“ Zinkcn. new fork: ity PTOSS, l (3)0. Eleuler, Eu ene. Den. t lei sh edition t Interactional l f: "'3 HI Clinard, E9 -aall B. SOClOlO”V of Dev'ant Bohavia9. New York: Hine_-rt and 00., inc., 1957. Dayton, N.H. 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Seahow c DiJTLe; ent:L9-Ls in t19 Probe cility 01' Ins 9rity." American Journ91 of SOCiolO”V, Vol. LA (Jantarj, 1935), pp. 53h-539. KoLn,'Helvin L., ani John.A. Claucen. "Social IsolaTion and ScuiA05~rcn1A." Am‘r'c n Se c:Lel c 1_Lovicv, Vol. 20 (June, 1955), p 501-511. Lantz a, Her”:n R. "PO“HlQI')? Densi tv 91d I9"cA1 tr ic Die nosis Sm iolojl and Secinl Qesec Arch, V01. 37 (1953), FT. “5 2 —326 Lemar , Ld in_I. "An 153391.079"torTT Strdv of Iental Diso: ders in a :19r9_] Pr01_em.1reu." liur91 SI:iolcf3, V01. 13, (Octo er, 1940), p . 645- 54. Lemert, E win.K. "Lefml Connitficn' nwd Social Control." Sociolo v and Social h999¢rch, (In; JLm wl9g6) pp. 222-227. 9 .- ~ “\ - - ' I'v-eyerson, Abr9.L19:r.1."-1ewer ci 10715.91 Di; 19 de- .3 in Urbe 11 Ar eis.’ Ageri09n Journsl of P3"ch :rg, Vol. 96 (19w0), pp. 995-997. H.) ¢dCT99rd, g. "A St’tisticcl In"-st:99ti n c} the Incidence c 1-"e:1tc.1 Di sCIE“ er in 1 or” :13." 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A33 = .7 0311 See 3' 33. 34-337 031 “icftew, Vol. 22, (October, 1957), pp. 519—527. ' .-.J- .7 . - 1- H A -1 .1.“- 1 -. 1' 101131 D serdur. “n13ls .1 Lu-enxes, W.— F-fl SI.ter, E. "T3e Incide13ee 01 ’v‘el. 6, (19331-195), p77. 1723-1715. Tietze, Chri be 3er and Paul LemEQu, 33’.I3r 13 Ceeper . "Schiz o- ihr3n.I IIeie Dehrerei"e lsTc‘eses 366. See131-‘ 0030110 St: t1 ” A213? C"I1£NTT3131 of 81:101 , Vol. MO (Se Warner, U. L., "The Seeieey, the Ingividual 3nd 31': Rental Dis- , - o 3133 her, 793LT_66. 166-17. ercers. Amerie3n.Jkn6fififil.g£ Payehiatry, Vol. 9Q (1937), 5p. 275-286 .10 (7) x. Eiseellaneeus Beefle, J. A713 ..... 3:6 Denel' 331: On. giehifen's Cr n in: Popu- lat1en." CWeevil. Bulletin ul5. mart Lansinf, Lie31f3n: Kiehi33n St te University Awrieultur3l 3.1T m3r1;3ent Stat1on, 5130,1957. -.L .‘ 00311101313631). in a R 7 “1°31 Pej 11.73 61 7 T'hesis, IniiLq ana un1ver3a v, 1956. Costner, Herbert L. "Different71 R”tes of esaWU3lizat e 1L7- l-Jo S rate :OSpital (Bu_lletin of 613 Univerraty el Ueerg1a, L 9a, V01. 31.4., 1kt-‘ €11.67 , G95. ’ Jlllzl , 10 /_ 9 ) , :':‘:). 32-33. Greene, J. 7 3113 J. S. J3eeb. Cen6131ens in the Killeflieville V0 Sdhreeder, W:L dick 4., "SUicide Differenti3ls in Tiehig1 Unf-u-W 'Lo7715d I-I.A.71‘113.S1s, 111011157311 827127.133 U131_v 33.33 .s.’--— lJAL AEBENDIX TABLE I AGE OF SOHIfiOLJRENICS ARD GEHERAL IOPULATION 78 AGE NO. OF SQHIZ. GEEEKAL :03. 15—24 849 922,277(3) 25-34 1,408 1,042,819(5) 39-44 903 897,891(3) 45-54 418 736,123(3) 55-64 201 566,461(3) 65+ 102 46l,bSO(3) TABLE II 85; OF SUHIZOLdRLNICS AND GENEAAL -OPULATION SEX NO. LE 50312. GLIERAL POP. LALE 1,902 2,321,653(3) FEMALE 1,979 2,309,568 TABLE III AGE AND bEX OF SCHIZOLfiRfiNICS AGE 15-24 25-34 55-44 45-54 55-64 65£ MALE 479 695 436 155 86 SI_* FEMALE 370 713 467 263 115 51 ex‘ 79 TABLE IV NATIVITY OF SCHILOLHRLJICS ALD GEEERAL fOLULnTION NLIIVIII no. OE SSEIE. GAEERAL EOE. NATIVE 5,552 4,227,724(5) FOEEIGN 529 399,497(5) TABLE v AGE AND NATIVITY OF SCHIZOEHRBNICS AGE 15—24 25-54 55-44 45-54 55—64 654 NATIVE 855 1,556‘ 812 559 151 79 FOREIGN 14 52 91 79 7o 23 TABLE VI hnRITAL STATUS OF SCHIZOLHRJNICS AND GELERAL lOPULATION L1RIIEL STATUS NO. OF SCHIZ. GENERAL POP. SINGLE 1,485 945,286(5) jig—I‘m 1,679 3,158,620(3) SEEARATED 175 71,9o5(5> flIDOWED 15o 525,685(5) DIVORCED 511 125,725(5) UNKNOEN I03 .......... ’13.;ng VII AG; 1.131) 1.'11-1:§.I’I‘_111 QI-.TU;3 6F bJrLIZOIJdJAICS 80 AGE 15-24 25-54 55-44 45-54_, 55—64 “81,61E 642 471 251 79 45 65+ i9 LBMIED 151 707 495 221 '18 29 ..IDLQL..D 1 .L4 20 28 5O 37 11170110151) 16 I10 90 55 50 10 SJIILIDLALTJ‘J‘J 20 72 54 ' .L5 9 bl-f11;.L"..-.'1Q 19 5'4 15 20 11 TABLE VIII SSAIEOIAEEAICS ALE GEAEEAL IOIUIAIIUJ BY AEEA AREA 1J0. CF b‘JiIL. GBIQIELLIL 3:01). STANDARD LETE. AREA 2,865 5,105,658(5) CCETIGUCUS UOUNTIEd 641 1,019,397(5) 866111E6 Low CCLTIGUUUS 575 _502,166(5) TABLE IX IILIRITAL biATUS UF SUIIIZOILIRELQICS AND GENBRA“ SIAIJDQIRD LIETBOI- ULI‘LII-I AREAS 1- 05011111“ I U11" IN 1‘.111.-.;‘I'1-_; 6T-1TUS “JO. OF DUIII‘ZJ. GIIJIJLILAL BOP. SILGLE 1,047 621,115(5) LARRIED 8c SEL’ELRATED l , 592 2 , 179 , 301 ( 5) JIDONED & LIVOECED 555 501,789(5) UITKE‘TOVIN 105 81 TABLE X LARITAL STATUS OF SCHIZOIARENICS AND GENERAL IOIULATION IN TEE COLTIUUOUS COUNTIES NO. OF SCEIZ. GENERAL LOP. 05 LAEITAL STAT’ SINGLE 247 207,696(5) EAEEIEE a SEPARATED 514 557,577(5) WIDOMED & DIVORCED 7o 99.908(5) UNKNOWN O ......... TABLE XI KARITA STETUS OF SOHIZOIHRJNICS AND GENERAL IOPULATION IN COUNTIES NOT CONTIGUOUS 1 U} C IAAIIAL STAT NO. OF SGEIZ. GELEAAL EOE. SIJGLE 191 116,477(5) EAEEIEL & SEEAEATED 146 557,577(5) WIDOWED & DIVORGED 58 49,715(5) QEEAOAN o _________ TABLE X SEX OF SOHIZOIHRENICS AND GENERAL POEULATION IN STANDARD LETROLOLITAN AREAS 1‘! SEX no. OF SGAIE. EGEEAL 105. AALE 1,568 1,550.729(5) EEAALE 1,497 1,554,929(3) Q -‘~." ‘11 uuA L‘l‘ 82 TABLE XIII SCHIZOPHRENICS AND GENERAL IOEULATION IN CONTIGUOUS COULTIES SE1 E0. 0E QCHIE. GLLEEAL 103. AALE 556 512.096(5) FEMALE 505 5065501(3) TABLE XIV bCiIZOIHRENICS AND GENERAL IOLULATION IN COUNTIES NOT OOHTIGLOUS NO. OF SONIA. GELERAL LOB. 198 257,868(5) AGE OF 177 244,558(5) TABLE XV SCHIZOIRRENICS AND GENERAL IOLQLATION IN STANDARD ASTROLOLITAN AREAS AGE 15-24 E0. 0E $3513. GEAEEAL POP. 609 611.755(5> 25-54 1,062 752,022(5) 55-44 681 620,858(5) 45-54 519 512,76l(5) 55—64 145 570,181(5) 654 51 258,083(3) 83 TABLE XVI AGE OF SCHIZOIERENICS AND GENERAL IOLULATION IN COITIGUOUS COUNTIES AGE 30. CF SCHIZ. GELERAL TOP. 15-24 152 215,452(5) 25-54 210 217,267(5) “—_ 55-44 158 185,979(5> 45-54 66 146,865(5) 55-64 54 126,197(5) 65+ 41 151,659(5) TABLE XVII AGE OF SCHILOLARLJICS AND GELERAL IOEULATIOH IL COULTIES NOT 00EEIGU0US AGE NO. 0E 50515.._ GENERAL 103. 15-24 88 97,092(5) 25-54 156 A ' 95,550(5) 55-44 84 95,054(5) 45-54 55 76,499(5) 55-64 - 24 70,085KE) 65+ 10 71,908(5l_ , . ‘ 3+ “ ‘ 6, $031.. Iv-Ut.