Table 1.

Association of total hospitalization cost and selected factors that predict increased cost, Nationwide Inpatient Sample, 2005-2009

Characteristics	Living donor renal transplant (n=5,568)				Deceased donor renal transplant (n=8,757)
	Estimate	SE	% increase	p- value*	Estimate	SE	% increase	p- value*
Any complication	0.131	0.012	14%	<0.001	0.212	0.009	24%	<0.001
Inpatient dialysis	0.042	0.010	4%	<0.001	0.001	0.005	0%	0.79
Inpatient plasmapheresis	0.236	0.015	27%	<0.001	0.240	0.020	27%	<0.001
Length of stay quintiles								<0.001
4 or less days (reference)	-	-	-	-	-	-	-	-
5 days	0.064	0.008	7%	<0.001	0.100	0.008	10%	<0.001
6 days	0.134	0.009	14%	<0.001	0.168	0.009	18%	<0.001
7 or 8 days	0.250	0.010	28%	<0.001	0.275	0.009	32%	<0.001
More than 8 days	0.612	0.012	84%	<0.001	0.601	0.009	82%	<0.001
Hospital volume
Low (reference)	-	-	-	-	-	-	-	-
Medium	0.172	0.064	19%	0.008	0.175	0.055	19%	0.001
High	0.182	0.067	20%	0.007	0.163	0.057	18%	0.004

^*Estimates are based on hierarchical linear regression models with primary outcome of log hospitalization cost. Estimates are adjusted for patient level (age, race, gender, comorbidity, median income, primary payer) and hospital level (bed size, location, region, teaching status, median time to transplant) variables. Percent increase was calculated by exponentiating estimates. After removing patients with missing data, 99.6% of living donor renal transplants and 98.7% of deceased donor renal transplants remained in the model.