Table 5 Median NRI values according to different aspects of design and analysis
| Â | No. | NRI (median) | IQR | P value |
|---|---|---|---|---|
1. Reporting of censor handling | ||||
 Yes | 13 | 0.18 | 0.14–0.43 |  |
 No | 33 | 0.26 | 0.19–0.35 | 0.4869 |
2. No extrapolation | ||||
 Yes | 20 | 0.28 | 0.14–0.49 |  |
 No | 26 | 0.23 | 0.16–0.34 | 0.4186 |
3. Category NRI referencea | ||||
 Quoted | 38 | 0.25 | 0.18–0.39 |  |
 Not quoted | 8 | 0.18 | 0.00–0.38 | 0.1922 |
4. Justification of NRI categoriesa | ||||
 Yes | 40 | 0.25 | 0.15–0.41 |  |
 No | 6 | 0.21 | 0.18–0.29 | 0.7691 |
5. Reporting NRI components | ||||
 Yes | 22 | 0.24 | 0.13–0.34 |  |
 No | 24 | 0.28 | 0.19–0.48 | 0.1907 |
6. Reclassification table showing the number of events and non-events | ||||
 Yes | 32 | 0.27 | 0.18–0.37 |  |
 No | 14 | 0.21 | 0.14–0.43 | 0.3396 |
7. The availability of reclassification table with sufficient information to enable the calculation of event and non-event NRI | ||||
 Yes | 30 | 0.25 | 0.18–0.35 |  |
 No | 16 | 0.23 | 0.14–0.48 | 0.9265 |
8. Describing the combined NRI as sum not a percentage | ||||
 Yes | 25 | 0.28 | 0.14–0.47 |  |
 No | 21 | 0.22 | 0.18–0.30 | 0.256 |
9. Provide any indication of the proportion of correctly reclassified | ||||
 Yes | 15 | 0.35 | 0.14–0.53 |  |
 No | 31 | 0.23 | 0.16–0.34 | 0.0916 |
10. Strong conclusion based on the reporting of NRI | ||||
 No | 20 | 0.29 | 0.19–0.48 | No |
 Yes | 26 | 0.23 | 0.13–0.34 | 0.08 |
11. NRI adequate documented | ||||
 Adequate | 39 | 0.25 | 0.14–0.39 |  |
 Inadequate | 7 | 0.24 | 0.20–0.49 | 0.7949 |
12. Types of incremental value | ||||
 > 3 | 18 | 0.28 | 0.2–0.44 |  |
 < 3 | 28 | 0.23 | 0.13–0.37 | 0.2464 |