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  • Title: Sociodemographic Determinants of Waitlist and Posttransplant Survival Among End-Stage Liver Disease Patients.
    Author: Ross K, Patzer RE, Goldberg DS, Lynch RJ.
    Journal: Am J Transplant; 2017 Nov; 17(11):2879-2889. PubMed ID: 28695615.
    Abstract:
    While regional organ availability dominates discussions of distribution policy, community-level disparities remain poorly understood. We studied micro-geographic determinants of survival risk and their distribution across Donor Service Areas (DSAs). Scientific Registry of Transplant Recipients records for all adults waitlisted for liver transplantation 2002-2014 were reviewed. The primary exposure variables were county-level sociodemographic risk, as measured by the Community Health Score (CHS), a previously-validated composite index local health conditions, and distance to listing transplant center. Among 114 347 patients, the median CHS was 19.4 (range: 0-40). Compared the lowest risk counties (CHS 1-10), highest-risk counties (CHS 31-40) had more black (14.6% vs. 5.4%), publicly insured (44.9% vs. 33.0), and remote candidates (34.0% vs. 15.1% living >100 miles away). Higher-CHS candidates had greater waitlist mortality in Cox multivariable (HR 1.16 for CHS 31-40, 95% CI 1.11-1.21) and competing risks analysis (sHR 1.07, 95% CI 0.99-1.14). Post-transplant survival was similar across CHS quartiles. Living >25 miles from the transplant center conferred excess mortality risk (sHR 1.08, 95% CI 1.03-1.12). Proposed distribution changes would disproportionately impact DSAs with more high-CHS or distant candidates. Low-income, rural and minority patients experience excess mortality while awaiting transplant, and risk disproportionately worse outcomes with reduced organ availability under current proposals.
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