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Adverse Selection in the Children's Health Insurance Program
Michael A Morrisey1, Justin Blackburn2, David J Becker3
1Texas A&M University, College Station, TX, USA.
Summary
New enrollees in the Children's Health Insurance Program had lower first-month healthcare claims than continuing enrollees. Differences between early and late renewals were minimal, with early renewals showing slightly higher claims due to chronic conditions.
Area of Science:
- Health Services Research
- Public Health Policy
- Healthcare Economics
Background:
- Children's Health Insurance Program (CHIP) provides coverage to eligible children.
- Understanding enrollment patterns and their impact on healthcare utilization is crucial for program efficiency.
- A significant portion of CHIP enrollees are new or experience lapses in coverage.
Purpose of the Study:
- To compare the first-month healthcare claims experience of new CHIP enrollees versus continuing enrollees.
- To analyze differences in claims between immediate CHIP renewals and those with delayed renewal.
- To identify factors influencing healthcare utilization patterns in CHIP.
Main Methods:
- Utilized a 2-part model to estimate healthcare service utilization probability and extent.
- Analyzed claims data from 826,866 child-years between 1999 and 2012.
- Controlled for demographic and eligibility factors in multivariate analyses.
Main Results:
- New CHIP enrollees had $29 less in first-month claims compared to continuing enrollees, primarily due to lower ambulatory care use.
- Late CHIP renewals had $10 less in first-month claims than immediate renewals.
- After controlling for chronic conditions, no significant difference in claims existed between early and late renewals.
Conclusions:
- Differences in first-month claims experience between new and continuing CHIP enrollees are relatively small.
- Healthcare spending is slightly higher among continuing and early renewing enrollees.
- The presence of chronic health conditions significantly influences the claims experience of early CHIP renewals.
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