Does douching increase risk for sexually transmitted infections? A prospective study in high-risk adolescents
Cynthia S Tsai1, Bryan E Shepherd, Sten H Vermund
1Institute for Global Health, Vanderbilt University School of Medicine, Nashville, TN, USA.
Objective:
The objective of the study was to examine the association between douching and 4 sexually transmitted infections (STIs).
Study Design:
We followed up 411 high-risk human immunodeficiency virus-infected and uninfected female adolescents aged 12-19 years over a median 3-year period, both by time from study entry/first STI-free visit until an incident STI for participants who never, intermittently, and always douched and also by reported douching at a given STI-free visit and incidence of STI at the next visit, using adjusted Cox proportional hazards models to calculate hazard ratios (HR).
Results:
The time to STI was shorter for adolescents who always (HR, 2.1; 95% confidence interval [CI], 1.2-3.4) and intermittently (HR, 1.5; 95% CI, 1.0-2.2) douched, compared with never-douchers. An adjusted hazard for STI was 1.8 times larger for always-douchers (95% CI, 1.1-3.1) and 1.4 times larger for intermittent douchers (95% CI, 0.9-2.0), compared with never-douchers. When classifying by follow-up after an STI-free visit, always-douchers had a shorter STI-free time than never-douchers (HR(adj), 2.1; 95% CI, 1.5-3.1).
Conclusion:
Counseling to discourage douching may reduce STI risk in adolescents.
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