Table 3.

Multivariable Analysis of Mortality Risk Factors after Transplantation Stratified by Organ Type.

Organ type	aHR	95% CI	p Value
Heart*
Within 2 years
Medicare vs private	1.18	1.07–1.30	<.001
Medicaid vs private	1.10	0.97–1.26	0.15
After 2 years‖
Medicare vs private	1.39	1.20–1.60	<.001
Medicaid vs private	1.77	1.49–2.09	<.001
Lung†
Within 2 years
Medicare vs private	1.10	1.01–1.19	0.03
Medicaid vs private	1.15	1.00–1.33	0.05
After 2 years‖
Medicare vs private	1.18	1.06–1.31	0.004
Medicaid vs private	1.44	1.20–1.72	<.001
Liver‡
Medicare vs private	1.24	1.18–1.30	<.001
Medicaid vs private	1.25	1.18–1.32	<.001
Renal§
Medicare vs private	1.36	1.30–1.42	<.001
Medicaid vs private	1.37	1.24–1.51	<.001

^*adjusted for recipient age, race, gender, heart status, diabetes, hypertension, albumin, creatinine, and transplant year

^†adjusted for recipient age, race, gender, hypertension, albumin, creatinine, and transplant year

^‡adjusted for age, race, gender, diabetes, hypertension, MELD, and transplant year

^§adjusted for age, race, gender, years on dialysis, diabetes, hypertension, creatinine, and transplant year

^‖Model splined at 2 years post-transplant to account for violation of the proportional hazards assumption by the Medicare variable. Patients contributed time at risk for the first 2 years at which point they were censored if they were still alive. Those patients who died within 2 years only contributed time-at-risk until death date and were not included in the post-2 year estimate of risk. The post-2 year estimate includes only those who survived for more than 2 years post-transplant with time at risk beginning at 2 years and continuing until death or 5 years post-transplant.

aHR, adjusted hazard ratio