Table 2 Performances of NAATs compared to culture and consensus results
Assay | Sensitivity (95% CI) | Specificity (95% CI) | Predictive positive value (95% CI) | Predictive negative value (95% CI) | |
|---|---|---|---|---|---|
Compared to culture results | |||||
Ampliflash® GBS | 87.1% (78.3–92.6) | 99.1% (96.7–99.8) | 97.4% (90.9–99.3) | 95.2% (91.5–97.3) | |
PlusLife® GBS | 98.7% (93.0-99.8) | 91.9% (87.3–95.0) | 82.6% (73.6–89.0) | 99.5% (97.0-99.9) | |
Compared to consensus results | |||||
Ampliflash® GBS | 87.4% (78.8–92.8) | 100% (98.3–100) | 100% (95.2–100) | 95.2% (91.5–97.3) | |
PlusLife® GBS | 98.7% (93.2–99.8) | 92.9% (88.4–95.7) | 84.8% (76.1–90.7) | 99.5% (97.0-99.9) | |
Culture | 97.7% (92.0-99.4) | 100% (98.3–100) | 100% (95.7–100) | 99.1% (96.7–99.8) | |