TABLE 2.
Cutoff values for bacterial placental load associated with the highest probability of fetal infection
| Bacterial strain | No. of fetoplacental units analyzed | Cutoff value (103 CFU)a | Sensitivity (%) | Specificity (%) | PPV (%)b | NPV (%)c |
|---|---|---|---|---|---|---|
| EGDwt | 185 | 1.7 | 91 | 99 | 99 | 91 |
| ΔInlAB | 48 | 1.0 | 60 | 92 | 85 | 73 |
| ΔActA | 72 | 120.0 | 93 | 82 | 82 | 93 |
| ΔActA+ actA | 36 | 2.0 | 89 | 100 | 100 | 87 |
a
Cutoff values correspond to level of bacterial load of the placenta giving the highest probability of fetal infection.
b
PPV, positive predictive value.
c
NPV, negative predictive value.