Prevalence of mortality in cannabis consumer motorcyclists: meta-analysis of international studies

The purpose of this study was to estimate prevalence of mortality in cannabis consumer motorcyclists across the world. A systematic review was conducted from publications PubMed/Medline, ISI Web of Knowledge, EMBASE, Scopus, and Google Scholar from August 2010 to March2019. The variances of each study were calculated using the binomial distribution formula and the heterogeneity among the studies was analyzed by Q-Cochran test with a significant level less than 0.1 and the index of changes attributed to I² heterogeneity. The prevalence of mortality in cannabis consumer motorcyclists was estimated 0.15 (95% CI = 0.08-0.22). Subgroup analysis based on country type showed that the mortality rate of cannabis consumer motorcyclists in developed countries is 16% (0.08-0.24) and in developing countries is 8% (0.04-0.10). These findings have implications for developing interventions through presenting appropriate solution, educating people and raising awareness to address the changing nature of drug use among motorcyclists in the world.