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ABSTRACT
Background: Due to the increasing prevalence of cannabis use disorder (CUD), the impact of cannabis use on public health may be significant. Objective: The present study seeks the possible precursors (e.g., alcohol use) of CUD in order to minimize the potential negative consequences of CUD such as impaired coordination and performance. Method: The Harlem Longitudinal Development Study included 674 participants (53% African Americans, 47% Puerto Ricans), with 60% females (n=405) from a six wave survey. We used a growth mixture model to obtain the trajectories of alcohol use from the mean ages of 14 to 36. To examine the associations between alcohol use trajectories and CUD, we used logistic regression analyses with the indicator of CUD as the dependent variable and the indicator of membership in each trajectory group as the independent variables. Results: A three alcohol use trajectory group model was selected. Male gender, higher frequency of cannabis use in adolescence, and a lower educational level were associated with an increased likelihood of having CUD. Membership in the increasing alcohol use group (OR=27.44, p < .01; AOR=15.54, p < .01) and the moderate alcohol use group (OR=10.40, p < .05; AOR=8.63, p < .05) were associated with an increased likelihood of having CUD compared with the membership in the no or low alcohol use group. Conclusions: The findings of our study support the hypothesis that addressing alcohol use at an early age could impact later CUD.
Declaration of interest
The authors report no conflicts of interest. The authors alone are responsible for the content and writing of this paper.
Funding
This research was supported by the following grants from the NIH: research grant CA084063 from the National Cancer Institute and research grant DA05702 from the National Institute on Drug Abuse.