Table 2b.

Patient Factors Associated with Cold Ischemia Time in Same-Hospital Kidney Transplants

	Time Ratio (95% CI)	p-value
Donor Age (centered at 40, per decade)	0.98 (0.98 – 1.00)	<0.01
Donor male gender	1.00 (0.98 – 1.03)	0.7
Donor Race
White	REF
Black	0.98 (0.95 – 1.01)	0.3
Hispanic	1.00 (0.96 – 1.04)	>0.9
Other	1.06 (0.98 – 1.14)	0.2
Donor BMI
Normal	REF
Underweight	0.98 (0.92 – 1.04)	0.5
Overweight	1.03 (1.00 – 1.06)	0.02
Obese	1.02 (0.99 – 1.05)	0.3
DCD	1.09 (1.05 – 1.12)	<0.001
ECD	0.94 (0.90 – 0.98)	<0.01
Donor Right Kidney	1.05 (1.03 – 1.07)	<0.001
Donor Biopsy	1.13 (1.09 – 1.16)	<0.001
Recipient Age (centered at 50, per decade)	1.01 (1.00 – 1.02)	0.1
Recipient male gender	0.99 (0.97 – 1.01)	0.3
Recipient Race
White	REF
Black	1.01 (0.98 – 1.03)	0.7
Hispanic	1.01 (0.97 – 1.06)	0.5
Other	1.05 (1.00 – 1.10)	0.06
Recipient BMI
Normal	REF
Underweight	0.93 (0.87 – 1.00)	0.04
Overweight	1.03 (1.00 – 1.06)	0.09
Obese	1.03 (1.00 – 1.06)	0.02
Recipient Previous Transplant	1.02 (0.98 – 1.06)	0.3
Pre-Transplant Biopsy	1.00 (0.97 – 1.03)	>0.9
Ice and Mechanical Perfusion
Received and kept on ice	REF
Received on ice, put on pump	1.41 (1.33 – 1.49)	<0.001
Received on pump, put on ice	1.30 (1.23 – 1.38)	<0.001
Received and kept on pump	1.40 (1.34 – 1.45)	<0.001
Year of Transplant (centered on 2014)	0.98 (0.98 – 0.99)	<0.001
Additional KT procedures on same day	1.03 (1.01 – 1.05)	<0.01
Transplant Center Annual Volume	1.00 (1.00 – 1.00)	0.01
Single-center OPO (low competition)	0.95 (0.76 – 1.18)	0.6
Weekend Transplant	0.98 (0.96 – 1.01)	0.2
Same Donor SHKT vs OHKT	0.80 (0.79 – 0.81)	<0.001

Multilevel Accelerated Failure Time Model with OPO-level and Hospital-level variance (p<0.001).