Table 1.

Functions in survcomp to measure the performance of risk prediction models

Name	Function in survcomp	References
Concordance index	concordance.index	Harrel et al. (1996)
D index	D.index	Royston and Sauerbrei (2004)
Hazard ratio	hazard.ratio	Cox (1972)
Brier score	sbrier.score2proba	Graf et al. (1999)
Cross-validated partial likelihood	cvpl	Verweij and Houwelingen (1993)
Time-dependent ROC curve	tdrocc	Heagerty et al. (2000)
Kaplan–Meier curve	km.cox.plot	Kaplan and Meier (1958)
Forestplot	forestplot.surv	Lewis and Clarke (2001)