FIG. 3.
A total of 345 performance tests were administered >8 h post-treatment. This figure shows the number demonstrating “no effect,” a “positive effect,” a “negative effect,” and an “unclear effect” of THC (i.e., on any one of its outcome measures) >8–12, >12–24, and >24–48 h post-treatment. Counts are further subcategorized based on whether the performance test also demonstrated “no effect,” a “negative effect,” or an “unclear effect” “acutely” (i.e., anytime ≤8 h post-treatment) (or if acute effects were not assessed). Unused subgroupings were omitted from this figure. Note: reductions in driving speed ≤8 h post-treatment were not considered either “positive” or “negative” and were therefore omitted from this analysis. See Table 2 and Supplementary Table S3 for full results. THC, Δ9-tetrahydrocannabinol.