Table 1

Studies reviewed by intervention type

InterventionReviewsPrimary researchTotal
Price increases2*7*9*
Smoke-free environments1*12*13*
Educational media campaigns312*15*
Advertising bans
Health warnings
Smoking cessation support244*46*
Multifaceted approaches (community-based programmes)44
All interventions77784
  • *The sum of study numbers listed in each column (Reviews, Primary research, Total) is greater than the total given in the final row (All interventions) because one review20 and one primary study19 examined the impact of both price increases and smoke-free environments while another study examined the impact of both an educational media campaign and cessation support.31