Table 5 Ability of TSB measurements over the 50th, the 75th and the 90th percentile of TSB nomogram to predict significant hyperbilirubinaemia, for designated time periods
Hours of life | TP | FN | TN | FP | Sensitivity | Specificity | PPV | NPV |
|---|---|---|---|---|---|---|---|---|
24 - 48 hours | ||||||||
<50th percent | 24 | 1 | 357 | 263 | 96.0% | 57.6% | 8.4% | 99.7% |
<75th percent | 22 | 3 | 479 | 141 | 88.0% | 77.3% | 13.5% | 99.4% |
<90th percent | 12 | 13 | 576 | 44 | 48.0% | 92.9% | 21.4% | 97.8% |
49 - 72 hours | ||||||||
<50th percent | 23 | 0 | 657 | 368 | 100% | 64.1% | 5.9% | 100% |
<75th percent | 22 | 1 | 860 | 165 | 95.7% | 83.9% | 11.8% | 99.9% |
<90th percent | 17 | 6 | 975 | 50 | 73.9% | 95.1% | 25.4% | 99.4% |
73 - 96 hours | ||||||||
<50th percent | 7 | 0 | 322 | 145 | 100% | 69.0% | 4.6% | 100% |
<75th percent | 7 | 0 | 409 | 58 | 100% | 87.6% | 10.8% | 100% |
<90th percent | 6 | 1 | 446 | 21 | 85.7% | 95.5% | 22.2% | 99.8% |