Factors Linked to Bacterial Vaginosis in Nonpregnant Women
Claudia Holzman, DVM, MPH, PhD,
Judith M. Leventhal, PhD,
Hong Qiu, MD,
Nicole M. Jones, BS,
Jenny Wang, MS and
the BV Study Group
The authors are with the Department of Epidemiology, College of Human Medicine, Michigan State University, East Lansing. Members of the BV Study Group are listed in the Acknowledgments section.
Correspondence: Requests for reprints should be sent to Claudia Holzman, DVM, MPH, PhD, Department of Epidemiology, College of Human Medicine, Michigan State University, 4660 S Hagadorn, Suite 600, East Lansing, MI 48823 (e-mail: holzman{at}pilot.msu.edu).
Objectives. The purposes of this study were to test the hypothesisthat vaginal douching is linked to bacterial vaginosis in bothsymptomatic and asymptomatic women and to identify other demographic,reproductive, and lifestyle factors associated with bacterialvaginosis.
Methods. In this cross-sectional study involving 3 clinic sites,496 nonpregnant women completed a self-administered questionnaire.Their vaginal smears were assessed and cross-validated for bacterialvaginosis.
Results. The prevalence of bacterial vaginosis across clinicsranged from 15% to 30%. In analyses restricted to site 1, adjustedodds ratios (ORs) for bacterial vaginosis remained significantfor African American women with 13 or fewer years of education(OR = 5.5, 95% confidence interval [CI] = 2.1, 14.5), hormoneuse within the past 6 months (OR = 0.5, 95% CI = 0.2, 0.8),and vaginal douching within the past 2 months (OR = 2.9, 95%CI = 1.5, 5.6).
Conclusions. Two lifestyle factors emerge as strongly associatedwith bacterial vaginosis: systemic contraceptives appear protective,whereas douching is linked to an increase in prevalence. Thetemporal relationship between douching and bacterial vaginosisneeds further clarification.
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