From: Early and mid-term outcomes of off-pump versus on-pump coronary artery bypass surgery in patients with triple-vessel coronary artery disease: a randomized controlled trial
Variable
Hazard ratio
95% confidence interval
P value*
Off-pump CABG
0.57
0.24–1.32
0.192
EF < 50% before CABG
0.48
0.21–1.08
0.078
Left main disease history
0.38
0.08–1.61
0.188