Table 6.

Multivariate analysis of the primary cohort - donor, recipient and transplant center characteristics associated with donor medical complexity

	Primary cohort n=4819			Complete cohort n=9319
Donor attribute	OR	C.I.	p	OR	C.I.	p
Parent	1.21	0.94-1.56	0.13	1.14	0.93-1.37	0.20
Spouse	1.29	1.06-1.56	<0.01	1.18	1.02-1.36	0.03
Low education**	1.19	1.04-1.37	0.01	1.18	1.06-1.32	<0.01
Female	0.87	0.77-0.99	0.03	0.85	0.77-0.94	<0.01
Non US citizen	0.70	0.51-0.97	0.03	0.79	0.62-1.02	0.07
Age	1.01	1.01-1.02	<0.01	1.02	1.01-1.02	<0.01
Center attribute	OR	C.I.	p	OR	C.I.	p
Category of center volume
Low		Reference			Reference
Intermediate	1.20	0.95-1.52	0.13	1.04	0.86-1.26	0.69
High	1.26	1.02-1.57	0.03	1.01	0.84-1.21	0.92
Category of market competitiveness ***
Low	1.14	0.96-1.35	0.14	1.00	0.88-1.14	0.96
Intermediate	1.06	0.91-1.23	0.48	0.95	0.84-1.07	0.39
High		Reference			Reference
Proportion of live donors/total donors	1.97	1.23-3.16	<0.01	2.12	1.44-3.11	<0.01
6 month interval of wait-list time for deceased donor kidney in the center’s DSA	0.97	0.95-0.99	<0.01	0.97	0.95-0.99	<0.01

^*Results from multivariable logistic regression. Only hypothesized variables and those significant in the primary analysis are shown.

^**Defined as no years of college education

^***Market competitiveness as measured by the Herfindahl-Hirschmann index; the “market” here is centers performing renal transplants within a single donor service area. A high score reflects low competition; therefore, the high category is used as reference in the regression