Table 3. Multivariable analysis of risk factors for subsequent aortic operations.

Variable	Hazard ratio	P valve	95% CI
Indication was aortic dissection	0.255	<0.001	(0.119, 0.546)
Concomitant CABG	1.172	0.721	(0.489, 2.808)
Use of BB before initial surgery	2.319	0.007	(1.254, 4.288)
Weight <65 kg	1.152	0.632	(0.645, 2.059)
Age <30 years	0.665	0.203	(0.355, 1.246)

CABG, coronary artery bypass grafting; BB, β-blocker.