“Compared with no use of cannabis, continued use of cannabis at baseline and T2 was associated with an increased risk of persistence of psychotic symptoms between T2 and T3 (adjusted OR 2.2, 95% CI 1.2 to 4.2).”
“MAIN RESULTS Incident cannabis use among adolescents and young people between baseline and T2 was associated with an increased risk of later incident psychotic symptoms between T2 and T3 (adjusted OR 1.9, 95% CI 1.1 to 3.1).”