@article{ref1,
title="Marijuana use and service utilization among adolescents 7 years post substance use treatment",
journal="Drug and alcohol dependence",
year="2016",
author="Campbell, Cynthia I. and Sterling, Stacy and Chi, Felicia W. and Kline-Simon, Andrea H.",
volume="168",
number="",
pages="1-7",
abstract="BACKGROUND: In an environment of increasingly liberal attitudes towards marijuana use and legalization, little is known about long-term trajectories of marijuana use among clinical samples of adolescents, and how these trajectories relate to health services utilization over time. <br><br>METHODS: Latent growth curve analysis was used to identify distinct trajectories of marijuana use in a clinical sample of adolescents (N=391) over 7 years post substance use treatment in an integrated health system. We examined psychiatric problems and polysubstance use associated with the identified trajectory groups using general linear models. Nonlinear mixed-effects logistic regressions were used to examine associations between health services use and the trajectory groups. <br><br>RESULTS: We identified three marijuana use trajectory groups: (1) Abstinent (n=117); (2) Low/Stable use (n=174); and (3) Increasing use (n=100). Average externalizing and anxiety/depression scores were significantly lower over time for the Abstinent group compared to the Increasing and Low/Stable groups. The Low Stable and the Increasing group had fewer psychiatric visits over time (p<0.05) and the Low/Stable group used more substance use treatment services over time compared with the Abstinent group (p<0.001). <br><br>CONCLUSIONS: Treated adolescents showed distinct marijuana use patterns, one of which indicated a group of adolescents at risk of increased use over time. These individuals have greater psychiatric and polysubstance use over time, but may not be accessing needed services.<br><br>Copyright © 2016 Elsevier Ireland Ltd. All rights reserved.<p /> <p>Language: en</p>",
language="en",
issn="0376-8716",
doi="10.1016/j.drugalcdep.2016.08.012",
url="http://dx.doi.org/10.1016/j.drugalcdep.2016.08.012"
}