Objectives The purpose of this study is to provide an updated systematic review to identify
studies describing the prevalence of psychosis in order to explore methodological factors …

Background There is a lack of consistency in findings across studies on the prevalence of
schizophrenia, and no recent systematic review of the literature exists. The purpose of this …

Background Understanding the prevalence of schizophrenia has important implications for
both health service planning and risk factor epidemiology. The aims of this review are to …

OBJECTIVE: The duration of untreated psychosis may influence response to treatment,
reflecting a potentially malleable progressive pathological process. The authors reviewed …

BackgroundMost studies reporting the gender difference in age at onset of schizophrenia
show an earlier onset in males, but vary considerably in their estimates of the difference …

Introduction: That schizophrenia has a better course and outcome in developing countries
has become an axiom in international psychiatry. This is based primarily on a series of cross …

The objective was to estimate the prevalence and correlates of psychiatric disorders in a
nationwide sample of Korean adults. Face-to-face interviews were conducted with the …

Objective The aim of this study was to estimate the prevalence and correlates of mental
disorders in Korean adults. Methods Door to door household surveys were conducted with …

BACKGROUND: The duration of untreated psychosis (DUP) is defined as the period
between the onset of symptoms of psychosis and the start of antipsychotic treatment. Delay …

Previous surveys found a large (> 10-fold) variation in schizophrenia prevalence at different
geographic sites and a tendency for prevalence to increase with latitude. We conducted …