Assessment of agreement among tests for identifying bacterial vaginosis in patients

Authors

  • Edison Sotalin Nivela
  • Elsy Labrada González

Keywords:

bacterial vaginosis, PCR test, vaginal smear microscopy, Cohen's Kappa coefficient, gynaecological conditions

Abstract

Introduction: Bacterial vaginosis represents a gynaecological condition with significant implications for women's reproductive health.

Objective: To evaluate the concordance between bacterial vaginosis identification tests, polymerase chain reaction (PCR) and microscopic vaginal smear examination, in patients from a clinic in Ecuador.

Methods: The study was analytical, observational, cross-sectional and prospective. The study sample consisted of 114 patients from a clinic in Ecuador. Cohen's Kappa coefficient was calculated.

Results: The mean age was 38.34 years, with a standard error of 1.253, and a standard deviation of 13.383. Of the 114 patients, 24.6 % (N=28) had negative results in both tests, while 31.6 % (N=36) showed positive results in both microscopic examination and PCR. Thus, there was concordance in a total of 64 cases (56.1 %) and discrepancy in another 50 results (43.9 %). Cohen's Kappa coefficient had a value of 0.120 and an approximate significance level of p-value=0.201. The values of the various chi-square tests (Pearson's chi-square, continuity correction, likelihood ratio, Fisher's exact test and linear by linear association) had p-values ranging from 0.138 to 0.275.

Conclusions: There was insufficient evidence to reject the null hypothesis, evidencing that no significant association was found between PCR testing and microscopic vaginal smear examination in terms of identification of bacterial vaginosis in the sample studied.

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Published

2023-12-27

How to Cite

1.
Sotalin Nivela E, Labrada González E. Assessment of agreement among tests for identifying bacterial vaginosis in patients. Rev Cubana Inv Bioméd [Internet]. 2023 Dec. 27 [cited 2025 Jul. 31];42(2). Available from: https://revibiomedica.sld.cu/index.php/ibi/article/view/3169