(HealthDay News) — The proportion of new preemptive listings for kidney transplantation with Medicaid coverage increased in states with Medicaid expansion in the post-expansion era, according to a study published online in the Clinical Journal of the American Society of Nephrology.

Meera N. Harhay, MD, from the Drexel University College of Medicine in Philadelphia, and colleagues performed a retrospective observational study of adults listed for kidney transplantation using the United Network of Organ Sharing database. Data were included for the pre-Medicaid expansion era (Jan. 1, 2011, to Dec. 31, 2013) and the post-Medicaid expansion era (Jan. 1, 2014, to Dec. 31, 2016).

The researchers observed a 59% relative increase in Medicaid-covered preemptive listings from the pre- to post-expansion period in the 24 states that fully implemented Medicaid expansion, compared with an 8.8% increase among 19 Medicaid non-expansion states. The adjusted proportion of listings with Medicaid coverage decreased by 0.3% (4.0 to 3.7%) among non-expansion states compared with a 3.0% increase (7 to 10%) among expansion states from the pre- to post-expansion period. Medicaid expansion correlated with absolute increases in Medicaid coverage by 1.4, 4.0, 5.9, and 5.3% among white, black, Hispanic, and other listings, respectively.

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“Medicaid expansion was associated with an increase in the proportion of new preemptive listings for kidney transplantation with Medicaid coverage, with larger increases in Medicaid-coverage among racial and ethnic minority listings than among white listings,” the authors write.

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Harhay MN, McKenna RM, Boyle SM, et al. Association between Medicaid Expansion under the Affordable Care Act and Preemptive Listings for Kidney Transplantation. Clin J Am Soc Nephrol. doi: 10.2215/​CJN.00100118 [Published online June 21, 2018]

The Affordable Care Act, Kidney Transplant Access, and Kidney Disease Care in the United States. Clin J Am Soc Nephrol. doi: 10.2215/CJN.06390518 [Published online June 21, 2018]