Geographic Variation in Quality of Care for Commercially Insured Patients
Published online on May 03, 2016
Abstract
Background
Extensive evidence documents geographic variation in spending, but limited research assesses geographic variation in quality, particularly among commercially insured enrollees.
Objective
To measure geographic variation in quality measures, correlation among measures, and correlation between measures and spending for commercially insured enrollees.
Data Source
Administrative claims from the 2007–2009 Truven MarketScan database.
Methods
We calculated variation in, and correlations among, 10 quality measures across 306 Hospital Referral Regions (HRRs), adjusting for beneficiary traits and sample size differences. Further, we created a quality index and correlated it with spending.
Results
The coefficient of variation of HRR‐level performance ranged from 0.04 to 0.38. Correlations among quality measures generally ranged from 0.2 to 0.5. Quality was modestly positively related to spending.
Conclusion
Quality varied across HRRs and there was only a modest geographic “quality footprint.”