Did copayment changes reduce health service utilization among CHIP enrollees? Evidence from alabama

Health Services Research

Volumn 47, Issue 4, 2012, Pages 1603-1620

  Sen, Bisakha ^a   Blackburn, Justin ^a   Morrisey, Michael A ^a   Kilgore, Meredith L ^a   Becker, David J ^a   Caldwell, Cathy ^a   Menachemi, Nir ^b  

^a UNIVERSITY OF ALABAMA AT BIRMINGHAM   (United States)

^b ALABAMA DEPARTMENT OF PUBLIC HEALTH   (United States)

Author keywords

children; CHIP; copayment; cost sharing; health care utilization

Indexed keywords

GENERIC DRUG; PRESCRIPTION DRUG;

ALLERGY; AMBULANCE; AMBULATORY CARE; ARTICLE; BILLING AND CLAIMS; CHILD; CHILDREN'S HEALTH INSURANCE PROGRAM; EMERGENCY WARD; HEALTH CARE UTILIZATION; HEALTH INSURANCE; HEALTH PROGRAM; HOSPITAL PATIENT; HUMAN; OUTPATIENT CARE; UNITED STATES;

ALABAMA; CHILD; CHILD HEALTH SERVICES; COST SHARING; FEMALE; HEALTH SERVICES RESEARCH; HUMANS; INSURANCE, HEALTH; LONGITUDINAL STUDIES; MALE;

EID: 84863715567     PISSN: 00179124     EISSN: 14756773     Source Type: Journal    
DOI: 10.1111/j.1475-6773.2012.01384.x     Document Type: Article

References (19)

1. American Association of Retired Persons (AARP) Public Policy Institute. 2008. " Strategies to Increase Generic Drug Utilization and Associated Savings " [accessed on September 30, 2011]. Available at
2. Artiga, S., and, M. O'Malley,. 2005. " Increasing Premiums and Cost Sharing in Medicaid and SCHIP: Recent State Experiences." Washington, DC: Kaiser Commission on Medicaid and the Uninsured. [accessed January 25, 2012]. Available at
3. Boles, M., J. Dilley, J.E. Maher, M.J. Boysun, and, T. Reid,. 2010. " Smoke-Free Law Associated with Higher-Than-Expected Taxable Retail Sales for Bars and Taverns in Washington State." Preventing Chronic Disease 7 (4): A79.
4. Busch, S. H., C. L. Barry, S. J. Vegso, J. L. Sindelar, and, M. R. Cullen,. 2006. " Effects of a Cost-Sharing Exemption on Use of Preventive Services at One Large Employer." Health Affairs 25 (6): 1529-36.
5. Center for Children and Families (CCF). 2008. " Cost Sharing for Children and Families in Medicaid and SCHIP." Georgetown University Health Policy Institute. [accessed on September 28, 2011]. Available at
6. Coughlin, T.A., and, S. Zuckerman,. 2005. " Three Years of State Fiscal Struggles: How did Medicaid and SCHIP Fare? " Health Affairs (Project Hope) Suppl Web Exclusives:W5-385-98.
7. Hartung, D.M., M.J. Carlson, D.F. Kraemer, D.G. Haxby, K.L. Ketchum, and, M.R. Greenlick,. 2008. " Impact of a Medicaid Copayment Policy on Prescription Drug and Health Services Utilization in a Fee-for-Service Medicaid Population." Medical Care 46 (6): 565-72.
8. Ku, L., and, V. Wachino,. 2007. " The Effect of Increased Cost Sharing in Medicaid: A Summary of Research Findings." Washington, DC: Center on Budget and Policy Priorities. [accessed January 25, 2012]. Available at.
9. Lee, D.S., and, T. Lemieux,. 2010. " Regression Discontinuity Designs in Economics." Journal of Economic Literature 48: 281-355.
10. Leibowitz, A. A, Rand Corporation, U.S. Department of Health and Human Services, and Rand Health Insurance Experiment. 1985. The Effect of Cost-Sharing on the Use of Medical Services by Children: Interim Results from a Randomized Controlled Trial. Santa Monica, CA: Rand Corporation.
11. Lohr, K. N., R. H. Brook, C. Kamberg, G. A. Goldberg, A. Leibowitz, J. Keesey, D. Reboussin, and, J. P. Newhouse,. 1986. Use of Medical Care in the RAND Health Insurance Experiment: Diagnosis- and Service-specific Analyses in a Randomized Controlled Trial. Santa Monica, CA: RAND Corporation.
12. Ma, M., and, S. McClintock,. 2011. " Regression Model Fitting with Quadratic Term Leads to Different Conclusion in Economic Analysis of Washington State Smoking Ban [letter]." Preventing Chronic Disease 8 (1): A26.
13. Newhouse, J. P., 2004. " Consumer-Directed Health Plans and The RAND Health Insurance Experiment." Health Affairs 23 (6): 107-13.
14. Newhouse, J. P., and The Insurance Experiment Group. 1993. " Free for All? Lessons from the Rand Health Experiment." Cambridge, MA: Harvard University Press.
15. Selden, T.M., G.M. Kenney, M.S. Pantell, and, J. Ruhter,. 2009. " Cost Sharing in Medicaid and CHIP: How Does It Affect Out-of-Pocket Spending? " Health Affairs (Project Hope) 28 (4): w607-19.
16. Tamblyn, R., R. Laprise, J.A. Hanley, M. Abrahamowicz, S. Scott, N. Mayo, J. Hurley, R. Grad, E. Latimer, R. Perreault, P. McLeod, A. Huang, P. Larochelle, and, L. Mallet,. 2001. " Adverse Events Associated with Prescription Drug Cost-Sharing among Poor and Elderly Persons." JAMA: The Journal of the American Medical Association 285 (4): 421-9.
17. Wagner, A.K., S.B. Soumerai, F. Zhang, and, D. Ross-Degnan,. 2002. " Segmented Regression Analysis of Interrupted Time Series Studies in Medication Use Research." Journal of Clinical Pharmacy and Therapeutics 27 (4): 299-309.
18. Wong, M.D., R. Andersen, C.D. Sherbourne, R.D. Hays, and, M.F. Shapiro,. 2001. " Effects of Cost Sharing on Care Seeking and Health Status: Results from the Medical Outcomes Study." American Journal of Public Health 91 (11): 1889-94.
19. Zuckerman, I.H., E. Lee, A.K. Wutoh, Z. Xue, and, B. Stuart,. 2006. " Application of Regression-Discontinuity Analysis in Pharmaceutical Health Services Research." Health Services Research 41 (2): 550-63.