Medical marijuana laws and adolescent marijuana use in the United States: a systematic review and meta-analysis.

ABSTRACT:

Aims

To conduct a systematic review and meta-analysis of studies in order to estimate the effect of US medical marijuana laws (MMLs) on past-month marijuana use prevalence among adolescents.

Methods

A total of 2999 papers from 17 literature sources were screened systematically. Eleven studies, developed from four ongoing large national surveys, were meta-analyzed. Estimates of MML effects on any past-month marijuana use prevalence from included studies were obtained from comparisons of pre-post MML changes in MML states to changes in non-MML states over comparable time-periods. These estimates were standardized and entered into a meta-analysis model with fixed-effects for each study. Heterogeneity among the study estimates by national data survey was tested with an omnibus F

SUBMITTER: Sarvet AL 

PROVIDER: S-EPMC5942879 | biostudies-literature | 2018 Jun

REPOSITORIES: biostudies-literature