From: Reporting performance of prognostic models in cancer: a review
 | % (n) articles |
---|---|
Statistical model used | Â |
   Cox only | 88 (41) |
   Cox plus other (two RPA, one ANN) | 6 (3) |
   Other (one Weibull, one RPA, one unclear) | 6 (3) |
Assumption of proportional hazards tested†| 21 (10) |
Final prognostic model reported* | 96 (45) |
Regression coefficient reported** | 72 (34) |
Reproducibility of model development assessed††| 11 (5) |
   Model with same variables, not same coefficients | 9 (4) |
   Model generating both new variables and coefficients | 4 (2) |