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Table. 2.

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.

Ann Lab Med 2022;42:478~481 https://doi.org/10.3343/alm.2022.42.4.478

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