HomeLatest ThreadsGreatest ThreadsForums & GroupsMy SubscriptionsMy Posts
DU Home » Latest Threads » Forums & Groups » Topics » Justice & Public Safety » Drug Policy (Group) » Study: No increase in tee... » Reply #1

Response to RainDog (Original post)

Mon Apr 28, 2014, 01:32 AM

1. 2013 Study: American Journal of Public Health (no increase in teen usage)

http://www.ncbi.nlm.nih.gov/pubmed/23763418

OBJECTIVES:
Medical marijuana laws (MMLs) have been suggested as a possible cause of increases in marijuana use among adolescents in the United States. We evaluated the effects of MMLs on adolescent marijuana use from 2003 through 2011.

METHODS:
We used data from the Youth Risk Behavior Survey and a difference-in-differences design to evaluate the effects of passage of state MMLs on adolescent marijuana use. The states examined (Montana, Rhode Island, Michigan, and Delaware) had passed MMLs at different times over a period of 8 years, ensuring that contemporaneous history was not a design confound.

RESULTS:
In 40 planned comparisons of adolescents exposed and not exposed to MMLs across states and over time, only 2 significant effects were found, an outcome expected according to chance alone. Further examination of the (nonsignificant) estimates revealed no discernible pattern suggesting an effect on either self-reported prevalence or frequency of marijuana use.

CONCLUSIONS:
Our results suggest that, in the states assessed here, MMLs have not measurably affected adolescent marijuana use in the first few years after their enactment. Longer-term results, after MMLs are more fully implemented, might be different.

Reply to this post

Back to OP Alert abuse Link to post in-thread

Always highlight: 10 newest replies | Replies posted after I mark a forum
Replies to this discussion thread
Arrow 4 replies Author Time Post
RainDog Apr 2014 OP
LineNew Reply 2013 Study: American Journal of Public Health (no increase in teen usage)
RainDog Apr 2014 #1
RainDog Apr 2014 #2
RainDog Apr 2014 #3
RainDog Apr 2014 #4
Please login to view edit histories.