Table 2.

Univariate analysis of the predictive factors for the primary endpoint.

Variable	Odds Ratio	95% CI	p-Value
Hemoglobin, g/dL	0.763	0.625–0.967	0.02
NT-proBNP, pg/mL	1.020	1.009–1.036	0.001
RDW, %	1.327	1.083–1.626	0.006
Cardiopulmonary bypass time, min *	1.048	0.986–1.114	0.07

Abbreviations: NT-proBNP: n-terminal of the prohormone brain natriuretic peptide, RDW: red cell distribution width, * denotes the variable that obtained the value closest to achieving statistical significance (p < 0.05).