%0 Journal Article
%T Greater risk for frequent marijuana use and problems among young adult marijuana users with a medical marijuana card
%J Drug and alcohol dependence
%D 2018
%A Tucker, Joan S.
%A Rodriguez, Anthony
%A Pedersen, Eric R.
%A Seelam, Rachana
%A Shih, Regina A.
%A D'Amico, Elizabeth J.
%V 194
%N 
%P 178-183
%X BACKGROUND: This study compared young adults with and without a medical marijuana (MM) recommendation from a provider ("MM card") on their developmental trajectories of frequent marijuana use and marijuana-related problems in young adulthood. <br><br>METHODS: The analytic sample consists of young adult past month marijuana users (N = 671) who were part of a larger, diverse, and predominantly California cohort. Analyses are based on data from seven surveys completed from ages 13-19. <br><br>RESULTS: At age 19, 28% of participants reported having an MM card to legally purchase marijuana from an MM dispensary. A multiple group latent growth model indicated that young adults who had an MM card showed steeper increases in frequent marijuana use (i.e., 20-30 days of use in the past month) from ages 13-19 compared to young adults who did not have an MM card. Logistic regression models that matched MM cardholders and non-MM cardholders on individual sociodemographic characteristics found that MM cardholders were more likely to report marijuana negative consequences, selling marijuana/hashish, and driving under the influence of marijuana in the past year. In addition, MM cardholders were more likely to have tried cutting down or quitting in the past 3-months. <br><br>CONCLUSIONS: Among young adult marijuana users, those with an MM card had a higher risk profile for marijuana use and related problems compared to those without an MM card. Given expanding state legalization of MM, this issue warrants further attention.<br><br>Copyright © 2018. Published by Elsevier B.V.<p /> <p>Language: en</p>
%G en
%I Elsevier Publishing
%@ 0376-8716
%U http://dx.doi.org/10.1016/j.drugalcdep.2018.09.028