Influence of early self-diagnosis and treatment of bacterial vaginosis on preterm birth rate

Ali Sungkar, Yuditiya Purwosunu, Muhamad F. Aziz, Hadi Pratomo, Bambang Sutrisna, Akihiko Sekizawa

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)


Objective: To assess whether early self-diagnosis and treatment of bacterial vaginosis (BV) could lower the preterm birth rate among a group of Indonesian women. Methods: A randomized controlled trial of 331 pregnant women (14-18 weeks) was conducted. Participants were randomly assigned to either the active model group (n = 176) or the control group (n = 155). Women in the active model group were equipped with a kit to self-evaluate vaginal pH; those with a positive test result were treated with a twice daily dose of 500 mg of metronidazole for 7 days. The primary end point was preterm birth rate. Results: There were 6 (3.8%) and 8 (5.4%) preterm births in the active model and control groups, respectively (P = 0.468). No spontaneous abortions were recorded in either group. When compared with the gold standard (Gram staining), the vaginal acidity test had low ability to detect BV, with 88.7% specificity and 36.9% sensitivity. The positive predictive value of the test was 35.0% PPV, while the negative predictive value was 89.4%. Conclusion: Early self-diagnosis and treatment of BV did not reduce the preterm birth rate of the study group. number: NCT01232192.

Original languageEnglish
Pages (from-to)264-267
Number of pages4
JournalInternational Journal of Gynecology and Obstetrics
Issue number3
Publication statusPublished - Jun 2012


  • Bacterial vaginosis
  • Gram stain
  • Preterm birth
  • Self-diagnosis
  • Vaginal pH


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