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% |