Did the Dependent Coverage Expansion Increase Risky Substance Use Among Young Adults?

Published in: Drug and Alcohol Dependence Volume 178 (September 2017), Pages 556-561. doi: 10.1016/j.drugalcdep.2017.06.017

Posted on RAND.org on August 25, 2017

by Joshua Breslau, Hao Yu, Bing Han, Rosalie Liccardo Pacula, Rachel M. Burns, Bradley D. Stein

Read More

Access further information on this document at Drug and Alcohol Dependence Volume 178 (September 2017)

This article was published outside of RAND. The full text of the article can be found at the link above.

Background

The dependent coverage expansion (DCE) enacted through the Affordable Care Act increased health insurance coverage among young adults. Increasing insurance coverage in this age group has the potential for unintended consequences on risky substance use.

Methods

Repeated cross-sectional surveys were used to compare change in substance use during the period the DCE was implemented in the 19–25 year old target age group (Pre-DCE n = 15,772, Post-DCE n = 22,719) with contemporaneous change in a slightly older age group that was not targeted by the policy (Pre-DCE = 19,851, Post-DCE n = 28,157). Outcomes include 11 measures of alcohol, illicit drug and cigarette use. Statistical controls were included for demographic and socioeconomic factors and for early initiation of substance use to adjust for historical trends in developmental trajectories.

Results

Risky substance use decreased in young adults relative to the older age group over the period that the DCE was implemented. However, statistical adjustment for initiation of substance use prior to age 18, which is prior to exposure to the DCE, accounted for the differences between the age groups. In adjusted models, associations between the DCE and substance use outcomes range from 0.96 to 1.08 with p-values ranging from 0.330 to 0.963.

Conclusions

Historical trends in initiation of substance use prior to age 18, not the DCE, account for change in risky substance use among 19–25 year olds relative to 26–34 year olds. The evidence does not support the suggestion that health insurance coverage would increase risky substance use among young adults.

Research conducted by

This report is part of the RAND Corporation external publication series. Many RAND studies are published in peer-reviewed scholarly journals, as chapters in commercial books, or as documents published by other organizations.

The RAND Corporation is a nonprofit institution that helps improve policy and decisionmaking through research and analysis. RAND's publications do not necessarily reflect the opinions of its research clients and sponsors.