. Author manuscript; available in PMC: 2017 Jan 1.

Published in final edited form as: Ann Vasc Surg. 2015 Jul 14;30:72–81.e2. doi: 10.1016/j.avsg.2015.04.092

Table 4.

Risk-adjusted association between the occurrence of acute and chronic kidney disease and mortality and hospital cost after major vascular surgery.

	Ninety-day Mortality			Hospital Cost
	Unadjusted odds ratio (95% CI)	Risk-adjusted odds ratio (95% CI)	Risk-adjusted mean % (95% CI)	Risk-adjusted relative cost ratio (95% CI)	Risk-adjusted incremental cost per patient (95% CI)	Risk-adjusted average cost per patient (95% CI)
No Kidney Disease	1 (Reference)	1 (Reference)	5.8 (4.1, 7.5)	1 (Reference)	0 (Reference)	$39,200 ($37,800, $40,600)
Acute Kidney Injury without Chronic Kidney Disease	5.44 (3.85, 7.69)^*	2.21 (1.49, 3.28)^*	10.7 (9.3, 12.0)^*	1.23 (1.18, 1.29)^*	$9,100 ($7,200, $11,000)^*	$48,300 ($46,900, $49,600)^*
Acute Kidney Injury with Chronic Kidney Disease	8.37 (5.53, 12.67)^*	1.80 (1.07, 3.04)^*	9.2 (6.9, 11.5)^*	1.49 (1.38, 1.60)^*	$19,100 ($15,000, $23,100)^*	$58,300 ($54,700, $61,800)^*
Chronic Kidney Disease without Acute Kidney Injury	6.85 (4.39, 10.68)^*	2.09 (1.17, 3.72)^*	10.2 (7.1, 13.3)^*	1.23 (1.13, 1.33)^*	$8,900 ($5,100, $12,700)^*	$48,100 ($44,700, $51,500)^*

Abbreviations. CI, confidence interval.

The risk-adjusted ratios and means were derived using generalized linear models adjusted for age, gender, ethnicity, primary payer, Charlson Comorbidity Index, emergent surgery status, weekend admission, estimated GFR (glomerular filtration rate), and all postoperative complications.

P<0.05 using generalized linear models to compare to no known kidney disease group.