Table 6.

Statistics for model improvement of CRSS over RSS for All-cause and cardiac mortality.

	Model performance		Risk reclassification		Discrimination
	Δ AUC	P-Value	NRI (95% CI)	P-Value	IDI (95% CI)	P-Value
All-cause death	0.038	<0.001	0.103 (0.029–0.181)	0.007	0.002 (−0.018–0.022)	0.840
Cardiac death	0.040	0.002	0.164 (0.081–0.248)	<0.001	0.009 (−0.036–0.018)	0.516

CRSS, clinical residual SYNTAX score; RSS, residual SYNTAX score; AUC, area under the curve; CI, confidence interval; NRI, net reclassification improvement; IDI, integrated discrimination improvement.