Table 4.

Association of postoperative QTc prolongation with major adverse events

Outcome	QTc ≤ 440 msec (n = 644)	QTc > 440 msec (n = 215)	OR (95%CI)*	P value*
Postoperative ventricular arrhythmias	31 (4.8)	12 (5.6)	1.17 (0.6 to 2.32)	0.65
30-day mortality	10 (1.6)	4 (1.9)	1.2 (0.37 to 3.87)**	0.76**
1-yr mortality	28 (4.4)	16 (7.4)	1.76 (0.94 to 3.34)**	0.07**
5-yr mortality	109 (16.9)	57 (26.5)	1.77 (1.22 to 2.55)**	0.003**

Variables are presented as n (%). QTc = corrected QT interval; OR (95% CI) = odds ratio (95% confidence interval)

^*From logistic regression models;

^**Adjusted for EuroSCORE