정신분열병 환자의 계절별 출생에 관한 예비적 연구

Season o f Birth o f Schizophrenics

We collected data from the psychiatric inpatient records of Seoul National University Hospital to test the hypothesis that schizophrenic patients are bom in winter more frequently than would be expected by chance. Three hundreds and eighteen records of schizophrenic patients were reviewed and the results were as follows; 1) No evidence of seasonal variation of birth for schizophrenic patients was found. 2) Season of birth was unrelated to the sex of the patient, birth order, clinical subtypes, diagnostic cirteria, marital status, birth place, social class, age on the first admission, total duration of admission, or family history.