Risk factors for bacterial vaginosis incidence in young adult Thai women

Sex Transm Dis. 2008 Jul;35(7):643-8. doi: 10.1097/OLQ.0b013e31816f70f2.


Objective: To determine risk factors for incident bacterial vaginosis (BV) in young Thai women.

Study design: Prospective data from a cohort of 1522 women aged 18 to 35 years, who were enrolled in a study of hormonal contraception and HIV acquisition, were used to evaluate potential risk factors for BV, as diagnosed by Amsel criteria.

Results: The median prevalence of BV from 3 to 24 months of follow-up visits was 2.5%. The BV incidence was 10.0 per 100-woman years. Statistically significant factors in multivariable analysis were sex during menstruation [hazard ratio (HR), 1.80; 95% CI, 1.11-2.92], male partners having sex with other women (HR, 2.3; 95% CI, 1.45-2.98), cigarette smoking (HR, 1.79; 95% CI, 1.08-2.98), and trichomoniasis (HR, 15.68; 95% CI, 4.95-49.68). Intravaginal practices were not associated with incident BV in unadjusted or adjusted analysis.

Conclusions: This study supports the association between sexual behaviors and the incident BV. Failure to detect an association between intravaginal practices and incident BV warrants further studies in high-risk populations or in women with a higher prevalence of intravaginal practices.

MeSH terms

  • Adolescent
  • Adult
  • Cohort Studies
  • Female
  • Humans
  • Incidence
  • Prevalence
  • Prospective Studies
  • Risk Factors
  • Sexual Behavior
  • Socioeconomic Factors
  • Thailand / epidemiology
  • Vaginosis, Bacterial / epidemiology*
  • Vaginosis, Bacterial / etiology
  • Vaginosis, Bacterial / prevention & control*