Two articles on the effect of recreational marijuana commercialization on traffic fatalities reached opposite conclusions in the June 22nd 2020 issue of JAMA Internal Medicine. Readers should understand the effect of study design differences before concluding that marijuana can be commercialized without an increase in traffic fatalities.
Kamer (doi:10.1001/jamainternmed.2020.1769) reported that traffic fatalities increased in both Colorado and Washington after commercializing recreational marijuana. But Santaella-Tenorio (doi:10.1001/jamainternmed.2020.1757) found traffic fatality increased in Colorado but not in … READ MORE