Medicaid expansion and opioid overdose mortality among socioeconomically disadvantaged populations in the US: A difference in differences analysis

Opioid-related overdoses are a major cause of mortality in the US. Medicaid Expansion is posited to reduce opioid overdose-related mortality (OORM), and may have a particularly strong effect among people of lower socioeconomic status. This study assessed the association between state Medicaid Expans...

Full description

Saved in:

Bibliographic Details
Published in:	Drug and alcohol dependence 2022-04, Vol.233, p.109381-109381, Article 109381
Main Authors:	Ibragimov, Umedjon, Mansfield, Russell W., Yarbrough, Courtney R., Cummings, Janet R., Livingston, Melvin D., Haardörfer, Regine, Beane, Stephanie, Fadanelli, Monica M., Haley, Danielle F., Cooper, Hannah L.F.
Format:	Article
Language:	eng
Subjects:	Adult Adults Analgesics, Opioid - therapeutic use Averages Difference-in-difference modeling Disadvantaged Drug overdose Education Educational attainment Government programs Humans Medicaid Medicaid expansion Mortality Multivariable control Narcotics Opiate Overdose Opioid epidemic Opioid overdose-related mortality rates Opioids Overdose Overdoses Patient Protection and Affordable Care Act Population studies Quasi-experimental methods Sociodemographics Socioeconomic status Socioeconomics Statistical analysis Underreporting United States - epidemiology Vulnerable Populations
Online Access:	Get full text
Tags:	Add Tag No Tags, Be the first to tag this record!

Description
Summary:	Opioid-related overdoses are a major cause of mortality in the US. Medicaid Expansion is posited to reduce opioid overdose-related mortality (OORM), and may have a particularly strong effect among people of lower socioeconomic status. This study assessed the association between state Medicaid Expansion and county-level OORM rates among individuals with low educational attainment. This quasi-experimental study used lagged multilevel difference-in-difference models to test the relationship of state Medicaid Expansion to county-level OORM rates among people with a high-school diploma or less. Longitudinal (2008–2018) OORM data on 2978 counties nested in 48 states and the District of Columbia (DC) were drawn from the National Center for Health Statistics. The state-level exposure was a time-varying binary-coded variable capturing pre- and post-Medicaid Expansion under the Affordable Care Act (an “on switch”-type variable). The main outcome was annual county-level OORM rates among low-education adults adjusted for potential underreporting of OORM. The adjusted county-level OORM rates per 100,000 among the study population rose on average from 10.26 (SD = 13.56) in 2008–14.51 (SD = 18.20) in 2018. In the 1-year lagged multivariable model that controlled for policy and sociodemographic covariates, the association between state Medicaid Expansion and county-level OORM rates was statistically insignificant. We found no evidence that expanding Medicaid eligibility reduced OORM rates among adults with lower educational attainment. Future work should seek to corroborate our findings and also identify – and repair – breakdowns in mechanisms that should link Medicaid Expansion to reduced overdoses. •Compared opioid deaths among less educated people by state’s Medicaid expansion.•States that expanded Medicaid had higher adjusted rates of opioid deaths.•No evidence that Medicaid expansion influences opioid death rates in less educated.
ISSN:	0376-8716 1879-0046