An external validation of the Kidney Donor Risk Index in the UK transplant population in the presence of semi-competing events

Table 3 Numerical summary of the performance of the original Kidney Donor Risk Index for predicting graft failure 1 year and 5 years following transplantation while censoring for death and modelling death as a competing event

	Censoring at the time of death	Accounting for death as a competing event
One-year graft failure
T-D AUC (95% CI)	0.610 (0.592, 0.628)	0.607 (0.589, 0.625)
Calibration slope (95% CI)	1.074 (0.878, 1.271)	1.074 (0.877, 1.272)
Brier Score (95% CI)	0.058 (0.055, 0.062)	0.058 (0.054, 0.061)
Five-year graft failure
T-D AUC (95% CI)	0.625 (0.611, 0.640)	0.611 (0.597, 0.625)
Calibration slope (95% CI)	0.964 (0.827, 1.100)	0.979 (0.835, 1.123)
Brier Score (95% CI)	0.117 (0.112, 0.121)	0.114 (0.109, 0.118)

T-D AUC time-dependent area under receiver operating curve, CI confidence interval

ISSN: 2397-7523