Table 4.

Cox Proportional Hazards Model Results of Post Transplant Survival, January 2005 – June 2019

		95% Confidence Interval
Predictor	Hazard Ratio	Lower	Upper	p-value
HIV positive recipient	0.94	0.53	1.65	0.820
Donor age (per 5 years)	1.06	1.05	1.07	<0.001
Recipient age
<45 (per 5 years)	0.91	0.89	0.93	<0.001
>45 (per 5 years)	1.20	1.16	1.24	<0.001
Recipient male sex	0.96	0.91	1.02	0.181
Recipient ethnicity (reference: White)
Black	1.32	1.24	1.40	<0.001
Hispanic	1.00	0.91	1.10	0.995
Other	0.96	0.85	1.09	0.550
Donor/recipient sex mismatch	1.05	0.98	1.13	0.147
Recipient heart failure etiology (reference: ischemic)
Non-ischemic dilated	0.79	0.75	0.84	<0.001
Other	0.98	0.89	1.02	0.13
Recipient diabetes	1.27	1.20	1.33	<0.001
Recipient durable LVAD support	1.07	1.01	1.14	0.016
Recipient ECMO support	1.95	1.61	2.37	<0.001
Recipient temporary VAD support	1.21	1.00	1.45	0.048
Recipient IABP support	1.06	0.98	1.16	0.161
Recipient prior cardiac surgery	1.13	1.07	1.19	<0.001
Graft ischemic time (per hour)	1.08	1.06	1.11	<0.001
Transplant era (reference: 2005–2009)
2010–2014	0.85	0.78	0.88	<0.001
2015–2019	0.82	0.77	0.89	<0.001
Transplant center annualized volume
<20 (per 5 transplants)	0.93	0.90	0.96	<0.001
>20 (per 5 transplants)	1.07	1.04	1.11	<0.001
LVAD, left ventricular assist device; ECMO, extracorporeal membrane oxygenation; VAD, ventricular assist device; IABP, intra-aortic balloon pump