- Abbreviations: GEE Generalized Estimating Equation, n: number of event and number of missing data, Cand Number of candidate predictors assessed, EPV Events per variable, EPP Events per parameter, Critical appraisal domains (P Participants, Pr Predictors, O Outcome, A Analysis), Int Internal validation, Ext External validation, Disc Discrimination, Cal Calibration, Ov Overall, CITL Calibration-in-the-large, C: C-Statistic, AUC Area under curve, HL Hosmer–Lemeshow, RoB Risk of Bias, App Applicability
- + Low RoB or low corcern for applicability
- - High RoB or high concern for applicability
- ? Unclear RoB or applicability