Fig. 2From: State marijuana laws and opioid overdose mortalityForest Plot, Summary Percent Rate Differences (RD) and 95% Confidence Intervals (CI) of Opioid-related Mortality Associated with Medical Marijuana Laws in the U.S. The Diamond Indicates the Summary Percent RD. Horizontal Bars Indicate the 95% CI. Heterogeneity: Q statistic: 24.080, df = 4, P = 0.000, I2 = 83.389Back to article page