Table 3.

Risk factors of In-hospital death by univariate and multivariate logistic regression analysis after propensity score matching

	Univariate analysis			Multivariate analysis
	OR	95% CI	P	OR	95%CI	P
Age	1.102	0.962–1.262	0.16	1.098	0.932–1.293	0.265
Gender	1.065	0.452–2.512	0.885	1.034	0.389–2.750	0.947
BMI	0.980	0.863–1.113	0.76
BSA	0.567	0.052–6.158	0.641
Morbid obesity	0.945	0.685–1.304	0.732
NYHA classification	1.855	1.036–3.319	0.038	1.809	0.901–3.634	0.096
CAD classification	1.041	0.563- 1.923	0.899
Hypertension	0.599	0.265–1.356	0.219
Diabetes	2.193	0.997–4.826	0.051	1.937	0.777–4.825	0.156
Cerebrovascular disease	0.531	0.214–1.314	0.171
Preoperative eGFR	0.906	0.878–0.935	< 0.001
Preoperative LVEF	0.978	0.934–1.023	0.333
Number of diseased vessels	0.621	0.326–1.186	0.149
Peripheral vascular disease	1.943	0.629–6.001	0.248
Surgical status	2.748	0.816–9.527	0.103
Valvular disease	0.978	0.282–3.395	0.972
IABP implantation	3.594	2.000–6.459	< 0.001	3.309	1.668–6.563	0.001
COPD	0.339	0.045–2.571	0.295
Atrial fibrillation	1.937	0.417–9.002	0.399
Pulmonary hypertension	0.919	0.504–1.675	0.782
Previous PCI	1.361	0.448–4.136	0.587
Renal failure	7.066	2.256–22.131	0.001	5.272	1.337–20.793	0.018
Bypass graft number	0.770	0.510–1.164	0.215
Cardiopulmonary bypass	4.062	1.582–10.435	0.004	3.23	1.055–9.893	0.04
Medical Center	1.084	0.731–1.608	0.689
EuroSCORE II	1.135	1.029–1.252	0.011	0.965	0.837–1.112	0.622
Postoperative AKI	4.845	1.795–13.082	0.002	3.993	1.339–11.906	0.013

OR odds ratio, CI confidence interval, BMI body mass index, BSA body surface area, NYHA New York heart association, CAD, coronary artery disease, eGFR estimated glomerular filtration rate, LVEF left ventricular ejection fraction, IABP intra-aortic balloon pump, COPD chronic obstructive pulmonary disease, PCI percutaneous coronary intervention, EuroSCORE II European system for cardiac operative risk evaluation II, AKI acute kidney injury