. Author manuscript; available in PMC: 2018 Jul 4.

Published in final edited form as: J Vasc Surg. 2014 Jun 14;60(5):1247–1254.e2. doi: 10.1016/j.jvs.2014.05.009

Table IV.

Multivariable analysis of factors contributing to relative increases in per-patient hospital costs from 2005 vs 2010

	Mean cost difference 2005 vs 2010		Relative increase in cost 2005 vs 2010
	Unadjusted	Adjusted	Unadjusted	Adjusted
CCI ≥3	$3303	$15,220	1.08	1.35^a
Osteomyelitis	$11,244	$13,852	1.28	1.3
Any diagnostic test	$16,775	$22,876	1.31	1.34
Open revascularization	$15,145	$30,759	1.25	1.37^a
Endovascular revascularization	$17,662	$28.937	1.29	1.38^a
Minor amputation	$9918	$18,084	1.24	1.33^a
Major amputation	$23,794	$24,996	1.45	1.35

CCI, Charlson Comorbidity Index.

Adjusted models control for age group, sex, race, income quartile, insurance status, hospital teaching status, hospital bed size, hospital region, hospital location (urban/rural), critical limb ischemia, gangrene, osteomyelitis, CCI ≥3, nonelective admission, X ray, magnetic resonance imaging, computed tomography scan, antibiotic infusion, any endovascular revascularization, any open revascularization, minor amputation, major amputation, log-transformed hospital length of stay, and death.

P < .001 for adjusted vs unadjusted relative increase in cost.