Preoperative frailty assessment could be a predictive factor for the prognosis of elderly patients undergoing coronary artery bypass grafting: a retrospective case-control study

Table 3 Prediction models for prognosis in elderly patients with coronary artery bypass grafting

Model	Logistic regression analysis
Model	B	OR (95%CI)	Wald	P value
Clinical model without frailty (AUC = 0.928 [0.893–0.963])
MyO, ug/L	0.012	1.084 (1.058, 1.111)	42.772	0.000
Cardiac function classification, n (%)	0.299	4.103 (2.283, 7.373)	22.289	0.000
Clinical model with frailty (AUC = 0.939 [0.909–0.970])
MyO, ug/L	0.084	1.088 (1.060, 1.116)	40.096	0.000
Frailty, n (%)	2.253	9.519 (2.393, 37.869)	10.229	0.001
Cardiac function classification, n (%)	0.957	2.603 (1.364, 4.966)	8.419	0.004

AUC shown as area ± standard error (95% CI)
Abbreviations: AUC area under the receiver operating characteristic curve, CI confidence interval

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