Background and objectives: The 2010 Affordable Care Act mandates that health insurance companies make those up to age 26 eligible for their parents' policies. Thirty-four states previously enacted similar laws. The authors sought to examine the impact on access to care of state laws extending eligibility of parents' insurance to young adults.
Methods: By using a difference-in-differences analysis, we examined the 2002-2004 and 2008-2009 Behavior Risk Factor Surveillance System to compare 3 states enacting laws in 2005 or 2006 with 17 states that have not enacted laws on 4 outcomes: self-reported health insurance coverage, identification of a personal physician/clinician, physical exam from a physician within the past 2 years, and forgoing care in the past year due to cost.
Results: For each outcome there was differential improvement among states enacting laws compared with states without laws. Health insurance differentially increased 0.2% (95% confidence interval [CI], -3.8% to 4.2%), from 67.6% to 68.1% pre-post in states enacting laws and from 68.5% to 68.7% in states without. Personal physician/clinician identification differentially increased 0.9% (95% CI -3.1% to 5.0%), from 62.4% to 65.5% in states enacting laws and from 58.0% to 60.2% in states without. Recent physical exams differentially increased significantly 4.6% (95% CI, 0%-9.2%), from 77.3% to 81.2% in states enacting laws and from 76.2% to 75.5% in states without. Forgone care due to cost differentially decreased significantly 3.9% (95% CI, -0.3% to -7.5%), from 20.4% to 18.2% in states enacting laws and from 17.8% to 19.4% in states without.
Conclusions: States that expanded eligibility to parents' insurance in 2005 or 2006 experienced improvements in access to care among young adults.