Table 5. Discrimination and calibration of the ACEF-QFR score versus post-PCI physiological index and other commonly used risk scores for 2-year POCE based on the validation dataset.

	C-statistics [95% CI]	Difference in AUC	P-value*	Hosmer–Lemeshow (P-value)
ACEF: age, creatinine, and ejection fraction; PCI: percutaneous coronary intervention; QFR: quantitative flow ratio. *For comparison between the ACEF-QFR and other scores.
ACEF-QFR score	0.651 [0.611, 0.691]	Reference	Reference	7.070 (0.529)
Average post-PCI QFR	0.616 [0.573, 0.658]	0.035	0.045	6.563 (0.363)
Lowest post-PCI QFR	0.623 [0.581, 0.666]	0.028	0.131	7.718 (0.259)
ACEF score	0.579 [0.540, 0.618]	0.072	< 0.001	13.591 (0.093)
Modified ACEF score	0.589 [0.550, 0.627]	0.062	< 0.001	14.071 (0.080)
Residual SYNTAX score	0.574 [0.534, 0.614]	0.077	0.006	6.742 (0.241)