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- Title
The Effect of Parity on Expenditures for Individuals with Severe Mental Illness.
- Authors
McConnell, K. John
- Abstract
Objective To determine whether comprehensive behavioral health parity leads to changes in expenditures for individuals with severe mental illness ( SMI), who are likely to be in greatest need for services that could be outside of health plans' traditional limitations on behavioral health care. Data Sources/Study Setting We studied the effects of a comprehensive parity law enacted by Oregon in 2007. Using claims data, we compared expenditures for individuals in four Oregon commercial plans from 2005 through 2008 to a group of commercially insured individuals in Oregon who were exempt from parity. Study Design We used difference-in-differences and difference-in-difference-in-differences analyses to estimate changes in spending, and quantile regression methods to assess changes in the distribution of expenditures associated with parity. Principal Findings Among 2,195 individuals with SMI, parity was associated with increased expenditures for behavioral health services of $333 (95 percent CI $67, $615), without corresponding increases in out-of-pocket spending. The increase in expenditures was primarily attributable to shifts in the right tail of the distribution. Conclusions Oregon's parity law led to higher average expenditures for individuals with SMI. Parity may allow individuals with high mental health needs to receive services that may have been limited without parity regulations.
- Subjects
PARITY (Obstetrics); MEDICAL care costs; MEDICAL economics; HEALTH insurance; SUBSTANCE abuse research
- Publication
Health Services Research, 2013, Vol 48, Issue 5, p1634
- ISSN
0017-9124
- Publication type
Article
- DOI
10.1111/1475-6773.12058