Analyses control for adult smoking prevalence, age, school denomination, gender, extent of implement of policies regarding: outdoor and point of sale advertising bans, under age access laws, change in price per cigarette stick, smoke-free policies, year and school clustering.
N/D: no student had ≥800 TRPs/month for this number of months.
*3–4 months combined.
†6–7 months combined.
‡7–10 months combined.
§8–10 months combined.