Abstract: Background. The aims of this research were to use data gathered over the course of a 21 year longitudinal study to examine the linkages between cannabis dependence at ages 18 and 21 and rates of psychotic symptoms taking into account previous symptom levels and other confounding factors.Method. Data were gathered during the course of the Christchurch Health and Development Study (CHDS). The CHDS is a longitudinal study of a birth cohort of 1265 children who have been studied from birth to age 21. As part of this study, data were gathered on can...
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Topics: 
Psychiatry
Demography
Pediatrics