. Author manuscript; available in PMC: 2011 Apr 6.

Published in final edited form as: J Thorac Cardiovasc Surg. 2010 Nov 4;141(1):81–90. doi: 10.1016/j.jtcvs.2010.09.012

TABLE 4.

Risk-adjusted odds ratios for the effect of selected preoperative and operation-related patient risk factors for the outcomes of operative mortality, any postoperative complication, and major complication rate in elderly patients undergoing coronary artery bypass grafting operations

Preoperative or operative risk factor	Operative mortality	Any complication	Major complications
Patient age	1.06 (0.98–1.14)	1.05 (1.01–1.09)^*	1.02 (0.97–1.06)
Female gender	2.44 (1.60–3.72)^*	0.94 (0.78–1.14)	1.22 (1.13–1.84)^*
Renal failure	1.82 (0.91–3.62)	1.47 (0.99–2.19)	2.19 (1.43–3.36)^*
Stroke	0.70 (0.32–1.56)	1.16 (0.85–1.60)	1.27 (0.86–1.88)
Atrial fibrillation	2.10 (1.26–3.51)^*	0.80 (0.60–1.07)	1.36 (0.96–1.92)
NYHA class III	0.87 (0.52–1.48)	1.07 (0.86–1.33)	1.06 (0.79–1.42)
NYHA class IV	1.37 (0.79–240)	1.29 (0.99–1.69)	1.66 (1.20–2.31)
Urgent/emergency operation	1.43 (1.04–1.66)^*	1.19 (1.01–1.34)^*	1.35 (1.14–1.50)^*
Ejection fraction	0.98 (0.96–0.99)^*	0.99 (0.98–0.99)^*	0.98 (0.98–0.99)^*
Left main disease>50%	1.60 (1.06–2.42)^*	1.13 (0.94–1.37)	1.49 (1.17–1.89)^*
OPCAB	1.04 (0.63–1.71)	0.74 (0.59–0.93)^*	0.68 (0.50–0.93)^*
PRBC transfusion (units)	1.22 (1.03–1.44)^*	0.99 (0.89–1.09)	1.16 (1.02–1.32)^*

NYHA, New York Heart Association; OBCAB, off-pump coronary artery bypass grafting; PRBC, packed red blood cell.

P<.05.

Results reported as adjusted odds ratios (95% confidence interval). All model covariates selected a priori based on established clinical risk before data analyses.