| characteristics and pregnancy outcomes of pregnant women asymptomatic for bacterial vaginosis. | to determine the clinical, behavioral or demographic factors associated with asymptomatic bacterial vaginosis (bv) and to examine if women with asymptomatic bv had a higher risk of a variety of pregnancy outcomes compared to symptomatic bv positive women. for this study, 1916 pregnant women who were 12 weeks' gestation or less were enrolled. interviewers facilitated vaginal swab collection for bv assessment, and completed the baseline questionnaire. bv was identified by gram stain. | 2008 | 17546484 |