Part 1. Documentation of multivariable regression (n = 35) | No. | (%) |
a. Information on whether additional predictor is significant at <.05 level | 24 | 68.6 |
b. Results of a test that penalises for the inclusion of additional predictor | 8 | 22.9 |
Appropriate documentation (1a or 1b) | 26 | 74.3 |
Part 2. Documentation of AUC in ROC analysis (n = 33) |  |  |
a. Described method used to compare ROC curves | 13 | 39.4 |
b. Presented the AUC values with and without the additional predictor | 31 | 93.9 |
c. Presented CIs of AUC values with and without additional predictor | 9 | 27.3 |
d. Presented P value for comparison | 26 | 78.8 |
f. Availability or enable calculation of Δ AUC CIs | 30 | 90.9 |
Appropriate documentation 1 (2a and 2b and [2c or 2d]) | 11 | 33.3 |
Appropriate documentation 2 (2a and 2b and [2c or {2d or 2f}]) | 12 | 36.4 |
Part 3. Documentation of calibration (n = 35) |  |  |
Documentation of Hosmer-Lemeshaw test (n = 7) or Schoenfeld residuals (n = 1) | 8 | 22.9 |
Part 4. Documentation of reclassification analysis (n = 35) |  |  |
Report using table or text | Â | Â |
Not reported | 19 | 54.3 |
Partial | 5 | 14.3 |
Complete | 11 | 31.4 |
Standard of reporting of reclassification analysis (n = 16) |  |  |
a. Use of standard categories of risk | 11 | 68.8 |
b. Justified use of other categories of risk | 15 | 93.8 |
c. Reported the number of patients changing categories | 9 | 56.3 |
Appropriate documentation ([4a or 4b] and 4c) | 9 | 56.3 |
Inadequate | 7 | 43.8 |
Part 5. Documentation of NRI (n = 23) |  |  |
Type of NRIs | Â | Â |
Continuous/ category-free NRI | 4 | 17.4 |
Categorical NRI | 16 | 69.6 |
Reported both continuous & categorical NRIs | 1 | 4.3 |
Reported relative NRI | 1 | 4.3 |
Unclear | 3 | 13.0 |
Standard of reporting of categorical NRI (n = 16) |  |  |
a. Report censor handling | 5 | 31.3 |
b. No extrapolation | 7 | 43.8 |
c. Categorical NRI reference available | 14 | 87.5 |
d. Justification of risk categories | 14 | 87.5 |
e. Report NRI components | 5 | 31.3 |
f. Availability of reclassification table showing event and non-event | 8 | 50.0 |
g. Reclassification table enables the calculation of NRI components | 7 | 43.8 |
h. Combined NRI reported as a sum not a percentage | 8 | 50.0 |
i. The proportion of correctly reclassified subjects available | 7 | 43.8 |
j. Reported NRI not used to construct strong summary | 5 | 31.3 |
Adequate reporting of categorical NRI (> 5 items listed 5a–j)a | 11 | 68.8 |