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Aims The aim of the study was to examine the temporal associations between substance use and subclinical psychosis symptoms.
Design Data from a prospective community study sampled within a single cohort over 30 years (1978–2008) were analysed with discrete‐time hazard models.
Setting General population‐based sample.
Participants At initial sampling in 1978 males (n = 292) were 19 and females (...
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