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Prevalence estimates among adolescents in the CHS by cohort and by ethnicity for current cigarette use (all cohorts), and current cigarette or e-cigarette use (Cohort E) in (A) grade 11 and (B) grade 12 and for ever cigarette use (all cohorts) and ever cigarette or e-cigarette use (Cohort E) in (C) grade 11 and (D) grade 12, 1994–2014. HW, Hispanic white; NHW, non-Hispanic white.
