What do systematic reviews say?

Combined incentive‐based and educational interventions vs no intervention

Combined incentive‐based and educational interventions showed no clear difference in HIV prevalence compared with no intervention (low certainty).

• School‐based interventions for preventing HIV, sexually transmitted infections, and pregnancy in adolescents 2016 · Cochrane Headline outcomes only
  RR 1.53 [0.45, 5.13]
  1 study · 2506 participants
  Low