What do systematic reviews say?

Incentive‐based programmes vs no intervention

Incentive‐based programmes 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 1.23 [0.51, 2.96]
  2 studies · 3805 participants
  Low