Diagnostic performance of direct BDM in specimens obtained from 358 pregnant women
Culture | Direct BDM (N=358) | |||||
---|---|---|---|---|---|---|
Vagina or rectum | Vagina | Rectum | ||||
Positive |
Negative | Positive | Negative | Positive | Negative | |
Positive |
65 | 1 | 30 | 36 | 62 | 3 |
Negative | 3 | 289 | 0 | 292 | 3 | 290 |
Sensitivity (%) (95% CI) | 98.5 (90.7-99.9) | 45.5 (33.3-58.1) | 95.4 (86.2-98.8) | |||
Specificity (%) (95% CI) | 99.0 (96.8-99.7) | 100 (98.4-100) | 99.0 (96.8-99.7) |
*A positive result for either the vaginal or the rectal specimen was considered a positive result.
Abbreviations: BDM, BD Max GBS assay; CI, confidence interval.
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