The epidemiology of late-onset schizophrenia.


:We report an analysis of a large catchment area sample of patients with nonaffective functional psychoses presenting across all ages at onset. The male:female ratio was 1.56:1 in the 16-25-year age group; it reached unity around 30 years of age and declined to 0.38:1 in the 66-75-year group. Contrary to expectation, a higher proportion of patients with onset of illness after 45 years than of younger onset patients fulfilled DSM-III-R criteria for schizophrenia (52% vs. 38%). The distribution by age at onset was much the same irrespective of stringency of diagnosis. The highest rates were in the 16-25-year age group, with a slight second peak in the 46-55-year group, and a third (more emphatic) peak in the over-65 group. A closer analysis of demographic and phenomenologic variables revealed distinct differences between patients with early and late (after 44 years) onset of illness.


Schizophr Bull


Schizophrenia bulletin


Castle DJ,Murray RM




Has Abstract


1993-01-01 00:00:00












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