Table 10.
Performance of risk score at different cutoff point for preterm birth among pregnant women attending antenatal care at DMCSH, 2020 to 2022
| Cut point | Sensitivity (%) | Specificity (%) | Accuracy (%) | NPV (%) | PPV (%) | LR+ | LR- |
|---|---|---|---|---|---|---|---|
| (≥ 1 ) | 98.3 | 13.2 | 22.5 | 98.5 | 12.1 | 1.1344 | 0.1224 |
| (≥ 2 ) | 96.7 | 47.1 | 52.5 | 99.1 | 22.2 | 1.8315 | 0.0689 |
| (≥ 3 ) | 95.1 | 56.1 | 60.4 | 98.9 | 25.9 | 2.1714 | 0.0868 |
| (≥ 4 ) | 91.0 | 82.2 | 83.1 | 98.6 | 85.2 | 5.1042 | 0.1088 |
| (≥ 5 ) | 90.2 | 84.3 | 84.9 | 97.6 | 87.4 | 5.7630 | 0.1157 |
| (≥ 6 ) | 81.3 | 93.4 | 92.1 | 96.5 | 89.1 | 12.4292 | 0.2001 |
| (≥ 7 ) | 71.5 | 95.5 | 92.9 | 96.5 | 90.0 | 16.0419 | 0.2978 |
| (≥ 8 ) | 69.1 | 96.2 | 93.2 | 90.6 | 91.7 | 18.3494 | 0.3210 |
| (≥ 9 ) | 42.2 | 98.4 | 92.3 | 89.3 | 92.1 | 26.6605 | 0.5865 |
LR+ Positive Likelihood Ratio, LR Negative Likelihood Ratio, NPV Negative Predictive Value, PPV Positive Predictive Value