From: Reporting performance of prognostic models in cancer: a review
Topic | % (n = 47) articles |
---|---|
Model validation included | 34 (16) |
Validation dataset* | Â |
   Same data (bootstrap) | 13 (6) |
   Same population, new data** | 23 (11) |
   External (that is, new population setting) | 11 (5) |
   Larger series including original sample | 0 (0) |
Validation of models | Â |
   Final model with same coefficients and variables | 26 (12) |
   Unclear reporting | 9 (4) |
Modifications suggested to model in light of validation? | 0 (0) |