Socioeconomic Deprivation is Associated with Worse Patient and Graft Survival Following Adult Liver Transplantation

Background: The impact of social determinants of health (SDOH) on adult liver transplant recipient outcomes is not clear at a national level. Further understanding of the impact of SDOH on patient outcomes can inform effective equitable healthcare delivery. Methods: Unadjusted and multivariable models were used to analyze the Scientific Registry of Transplant Recipients to evaluate the association between the Social Deprivation Index (SDI) based on liver transplant recipient’s residential location and patient and graft survival. We included adult recipients between 1/1/2008-12/1/2021. Results: Patient and graft survival were lower in adults living in areas with deprivation scores above the median. Five-year patient and graft survival were 78.7% and 76.5% respectively in the cohort above median SDI compared to 80.5% and 78.3% below median SDI. Compared to the recipients in low deprivation residential areas, recipients residing in highest deprivation (SDI quintile=5) cohort had 6% higher adjusted risk of mortality (Adjusted Hazard Ratio [AHR]=1.06,95%C.I. 1.01-1.13) and 6% higher risk of graft failure (AHR=1.06,95% C.I. 1.001-1.11). The increased risks for recipients residing in more vulnerable residential areas were higher (AHR=1.11,95% CI 1.03-1.20 for both death and graft loss) following the first-year post-transplantation. Importantly, overall risk for graft loss associated with SDI was not linear but instead accelerated above the median level of deprivation. Discussion: In the United States, SDOH, as reflected by residential distress, significantly impact 5-year patient and graft survival. The overall effect of residential deprivation are modest, but importantly, results illustrate they are more strongly associated with longer-term follow up and accelerate at higher deprivation levels. Further research is needed to evaluate effective interventions and policies to attenuate disparities in outcomes among recipients in highly disadvantaged areas.