We compared the psychiatric manifestations of 56 CATEGO S schizophrenic in-patients from three ethnic groups (white, coloured and black). A marked similarity among the groups on both schizophrenic and non-schizophrenic symptoms was found, as well as a high prevalence of depressive and anxiety symptoms. Differences occurred on the syndromes of olfactory hallucinations and subcultural delusions and hallucination. Black patients had both syndromes more frequently than either white or coloured patients.
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Teggin et al. (1985) studied this question.
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