Incidence of sexually transmitted infections (STIs) by douching status in female adolescents
Douching assessmentDouching statusHazard ratio (95% CI)*
All study visitsNever1.0 (reference)
Intermittent1.4 (0.9 to 2.0)
Always1.8 (1.1 to 3.1)
STI-free visits onlyNever1.0 (reference)
Always2.1 (1.5 to 3.1)

  • *Hazard ratio adjusted for HIV status, race, baseline sexual history, and age.