The Effect of Louisiana Medicaid Expansion on Affordability of Health Care
Objectives Louisiana extended Medicaid coverage on July 1, 2016, to previously ineligible populations. We aimed to estimate the effect of Louisiana’s Medicaid expansion on self-reported affordability of health care. Methods We used 2011-2019 data from the Behavioral Risk Factor Surveillance System (BRFSS). The BRFSS measured affordability of health care by asking respondents 2 questions: (1) whether they could not see a doctor due to cost in the previous 12 months and (2) whether they could not get a prescribed medication due to cost in the previous 12 months. We estimated difference-in-differences and difference-in-difference-in-differences analytical models using multivariable linear regression that compared trends in Louisiana with trends in states that did not expand Medicaid during the study period. Results Compared with adults aged <65 with annual household income >138% of the federal poverty level (FPL) in nonexpansion states, Medicaid expansion in Louisiana decreased the percentage of adults aged <65 with annual household income ≤138% FPL who reported being unable to see a doctor due to cost by 5.1 percentage points (95% CI, −6.5 to −3.6; P < .001) and unable to afford prescribed medication by 7.9 percentage points (95% CI, −9.2 to −6.6; P < .001). We found similar estimates when we limited the comparison group to Southern nonexpansion states. Conclusions Louisiana’s Medicaid expansion lowered cost barriers to health care. Further research may find improvements in health care affordability in states that have not yet expanded Medicaid.