Table AI.

Multivariate regression model depicting the variables associated with receiving a prosthetic bypass conduit

Variable	Odds ratio	95% confidence interval	P-value
Antithrombotic therapy
Aspirin only	0.22	0.15–0.32	<0.001
Aspirin/clopidogrel/warfarin	1.8 1.1	2.8 0.02	1.8 1.1
History of coronary disease	1.7	1.2–2.3	0.002
Previous lower extremity bypass	2.9	2.1–4	<0.001
Age 70–79 yr	1.5	1.1–2.2	0.02
Age 80–89 yr	1.7	1.1–2.6	0.02
Age ≥90 yr	3	1.1–8.2	0.03
Graft origin at superficial femoral artery	2.6	1.7–4.1	<0.001
Graft target
Below-knee popliteal artery	3	2.1–4.3	<0.001
Tibioperoneal trunk	2.9	1.5–5.7	0.002