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Economics

Medicaid expansion, health insurance coverage, and cost barriers to care among low-income adults with asthma: the Adult Asthma Call-Back Survey

, MD, MS, , PhD, MS, , PhD, MPH & , MD, DSc, MPH, MA
Pages 1478-1487 | Received 16 Apr 2020, Accepted 28 Jul 2020, Published online: 08 Aug 2020
 

Abstract

Objective

To examine Medicaid expansion (ME) effects on health insurance coverage (HIC) and cost barriers to medical care among people with asthma.

Method

We analyzed 2012–2013 and 2015–2016 data from low-income adults with current asthma aged 18–64 years in the Behavioral Risk Factor Surveillance System Asthma Call-Back Survey (state-level telephone survey). We calculated weighted percentages and 95% confidence intervals from ME and non-ME jurisdictions (according to 2014 ME status). Outcomes were HIC and cost barriers to buying asthma medication (MED), seeing a health care provider for asthma (HCP), or any asthma care (AAC). Using SUDAAN, we performed survey-weighted difference-in-differences analyses, adjusting for demographics. Subgroup analyses were stratified by demographics.

Results

Our study population included 6445 participants from 25 states plus Puerto Rico. In 2015–2016 compared to 2012–2013, HIC was more common in ME jurisdictions (P < 0.001) but unchanged in non-ME jurisdictions. Adjusted difference-in-differences analyses showed ME was associated with a statistically significant 13.36 percentage-point increase in HIC (standard error = 0.053). Cost barriers to MED, HCP, and AAC did not change significantly for either group in descriptive and difference-in-differences analyses. In subgroup analyses, we noted variation in outcomes by demographics and 2014 ME status.

Conclusions

We found ME significantly affected HIC among low-income adults with asthma, but not cost barriers to asthma-related health care. Strategies to reduce cost barriers to asthma care could further improve health care access among low-income adults with asthma in ME jurisdictions.

Declaration of interest

The authors report no conflict of interest.

Data availability statement

Data are available at https://www.cdc.gov/brfss/acbs/index.htm.

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