The effect of the intervention will also be assessed using adjusted analyses. The cluster-specific prevalence or mean from the baseline survey will be adjusted for where available. Variables collected in the baseline community survey, which were imbalanced between trial arms, and likely to be prognostic for outcomes will be adjusted for. Secondary analyses will be conducted to assess whether the effect of the intervention differs by age group or school type. The effect of the intervention for each outcome will be examined by age group or school type and tests for interaction conducted.