Inhalants0.4 [0.2, .6]0.3 [0.1, .6]0.2 [0.1, .5]0.30.5 [0.3, .9].50 Other drugs0.3 [0.1, .5]0.2 [0.1, .3]0.4 [0.2, 0.7]0.30.5 [0.3, .8].08Note. Mean point prevalence is the average prevalence across surveys 1, 2, and 3. Cumulative prevalence based on youth who completed all three surveys. Estimates of prevalence and confidence intervals are per logistic regression clustering on site, family, and youth. p Value is per chi-square test [30]. Months are in the year 2020. “Any substance” is pooled across all 13 items enquiring about substances. Prescription drugs refers to misuse thereof. Nicotine rates collapse across smoking cigarettes, cigars, hookah, or a pipe; vaping an e-nicotine product; using smokeless tobacco, chew, or snus. Cannabis rates collapse across smoking/vaping flower, smoking/vaping concentrates, and using edibles.CI = confidence interval.