title: The "winter born phenomenon" among schizophrenics: differences between blacks and whites.
abstract: Reviewed the literature on birth seasonality among schizophrenics and reported data on highly significant differences between the quarterly birth patterns of black and white schizophrenics (N = 724). The findings strongly indicate that specific subgroups of schizophrenics are especially likely to be winter-borns. Log-linear analyses uncovered a highly significant difference between the birth seasons of black and white patients. Black schizophrenics are especially likely to be winter-borns, while white schizophrenics had a birth peak in the fall. We speculate about the causes of this race-specific finding from a perspective that is sociological and neurophysiological.
mesh_terms: D000293:Adolescent; D000328:Adult; D005006:Ethnicity / Q000523:psychology*; D006801:Humans; D012306:Risk; D012559:Schizophrenia / Q000209:etiology*; D012565:Schizophrenic Psychology; D012621:Seasons; D012923:Social Class