Cross-national differences in the frequency and outcome of schizophrenia: a comparison of five hypotheses.
Measures of morbid risk for schizophrenia derived from the WHO Determinants of Outcome of Severe Mental Disorders Study showed large correlations with the following: an occupational index, a measure of urbanicity, geographical and climatic variables, a dietary measure, and the infant mortality rate. The same variables were also correlated with a measure of outcome derived from the International Pilot Study of Schizophrenia. Nearly all of the correlations were significant. The postulated "explanatory" variables were themselves highly intercorrelated.
Gupta
S
S
Epidemiology Unit, London School of Hygiene and Tropical Medicine, UK.
D003431:Cross-Cultural Comparison; D005500:Follow-Up Studies; D006801:Humans; D012307:Risk Factors; D012559:Schizophrenia / Q000453:epidemiology* / Q000209:etiology / Q000534:rehabilitation; D012565:Schizophrenic Psychology; D012931:Social Environment