Table 6.
Comparison between the predictive ability of our percentiles and those of Buthani.
| Hours of age | TP (n) |
FN (n) |
TN (n) |
FP (n) |
Sensitivity (%) |
Specificity (%) |
PPV (%) |
NPV (%) |
|---|---|---|---|---|---|---|---|---|
| 24 to 96 hours | ||||||||
| < 40th percentile of Buthani nomogran | 54 | 1 | 1344 | 768 | 98.2 | 63.6 | 6.6 | 99.9 |
| < 50th percentile of our nomogram | 54 | 1 | 1336 | 776 | 98.2 | 63.3 | 6.5 | 99.9 |
| < 75th percentile of Buthani nomogram | 44 | 11 | 1861 | 251 | 80.0 | 88.1 | 14.9 | 99.4 |
| < 75th percentile of our nomogram | 51 | 4 | 1748 | 364 | 92.7 | 82.8 | 12.3 | 99.8 |
TP True Positive; FN False Negative; TN True negative; FP False Positive; PPV Positive Predictive Value; NPV Negative Predictive Value