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Prevalence of psychotic symptoms in the general population varies across 52 countries

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Question: What is the prevalence of psychotic symptoms in the general populations of various countries, and what is the overall association between psychotic symptoms and health status?

Population: 256 445 people (55.9% women, mean age 45 years) taken from nationally representative samples of 52 countries worldwide participating in the WHO's World Health Survey. Twenty countries were from the African region, 13 from the European region, 7 from the Americas and 12 from the Asian region. Fifteen countries were categorised at a high or upper-mid economic level and 37 at a lower-mid or low level by World Bank economic development categorisation. A multistage cluster design was used to draw samples from current national frames.

Setting: Private households in 52 countries worldwide. Dates not provided.

Assessment: Respondents were interviewed using the World Health Survey. The survey collected a wide range of health information, including data on depressive symptoms, previous schizophrenia diagnosis, current or previous schizophrenia treatment and psychotic symptoms during the preceding year, as well as potential confounders (sociodemographic factors, …

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  • Competing interests None.

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