Time Trends in Number of Schedule III Opioid Prescriptions per Quarter per 100 Medicaid Enrollees by Marijuana Legalization Status, 2010–2017,Figure 1a. States that implemented Recreational Marijuana Legalization in 2012 compared to States with Medical Marijuana Legalization Only,Figure 1b. States that implemented Recreational Marijuana Legalization in 2015 compared to States with Medical Marijuana Legalization Only,Figure 1c. States that implemented Recreational Marijuana Legalization in 2016/7 compared to States with Medical Marijuana Legalization Only, Notes: (RML: recreational marijuana legalization; MML: medical marijuana legalization) CO and WA implemented recreational marijuana legalization in 2012; AK, DC, and OR implemented recreational marijuana legalization in 2015; CA, MA, ME, and NV implemented recreational marijuana legalization in late 2016 or early 2017. HI, MI, MT, NM, RI, and VT had implemented medical marijuana legalization as of January 1st, 2010 but had not implemented recreational marijuana legalization during the study period.