Fig. 4. Rates of cannabis-associated psychosis (full episode).

Studies reporting rates of cannabis-associated psychosis (full episode). Depicted in violet are the individual study estimates (in %, 95% confidence interval) of studies reporting rates of (full-blown) cannabis-associated psychotic episodes. Included are studies using medicinal cannabis, observational, or experimental samples. The pooled meta-analyzed estimate is colored in blue. The I2 statistic (scale of 0 to 100) indexes the level of heterogeneity across the estimates included in the meta-analysis.