Journal of General Internal Medicine

, Volume 21, Issue 11, pp 1144–1149 | Cite as

Changes in health for the uninsured after reaching age-eligibility for medicare

  • David W. Baker
  • Joseph Feinglass
  • Ramon Durazo-Arvizu
  • Whitney P. Witt
  • Joseph J. Sudano
  • Jason A. Thompson
Original Articles


BACKGROUND: Uninsured adults in late middle age are more likely to have a health decline than individuals with private insurance.

OBJECTIVE: To determine how health and the risk of future adverse health outcomes changes after the uninsured gain Medicare.

DESIGN: Prospective cohort study.

PARTICIPANTS: Participants (N=3.419) in the Health and Retirement Study who transitioned from private insurance or being uninsured to having Medicare coverage at the 1996, 1998, 2000, or 2002 interview.

MEASUREMENTS: We analyzed risk-adjusted changes in self-reported overall health and physical functioning during the transition period to Medicare (t−2 to t0) and the following 2 years (t0 to t2).

RESULTS: Between the interview before age 65 (t−2) and the first interview after reaching age 65 (t0), previously uninsured individuals were more likely than those who had private insurance to have a major decline in overall health (adjusted relative risk [ARR] 1.46; 95% confidence interval [CI] 1.03 to 2.04) and to develop a new physical difficulty affecting mobility (ARR 1.24; 95% CI 0.96 to 1.56) or agility (ARR 1.33; 95% CI 1.12 to 1.54). Rates of improvement were similar between the 2 groups. During the next 2 years (t0 to t2), adjusted rates of declines in overall health and physical functioning were similar for individuals who were uninsured and those who had private insurance before gaining Medicare.

CONCLUSIONS: Gaining Medicare does not lead to immediate health benefits for individuals who were uninsured before age 65. However, after 2 or more years of continuous coverage, the uninsured no longer have a higher risk of adverse health outcomes.

Key Words

medically uninsured health status Medicare 


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  1. 1.
    DeNavas-Walt C, Proctor BD, Mills RJ. Income, Poverty, and Health Insurance Coverage in the United States: 2003. Washington, DC: U.S. Census Bureau; 2004.Google Scholar
  2. 2.
    Hoffman C, Rice D, Sung HY. Persons with chronic conditions. Their prevalence and costs. JAMA. 1996;276:1473–9.CrossRefGoogle Scholar
  3. 3.
    American Heart Association. Heart Disease and Stroke Statistics—2004 Update. Dallas, TX: American Heart Association; 2004.Google Scholar
  4. 4.
    Baker DW, Sudano JJ, Albert JM, et al. Lack of health insurance and decline in overall health in late middle age. N Engl J Med. 2001;345:1106–12.PubMedCrossRefGoogle Scholar
  5. 5.
    Baker DW, Sudano JJ, Albert JM, et al. Loss of health insurance and the risk for a decline in self-reported health and physical functioning. Med Care. 2002;40:1126–31.PubMedCrossRefGoogle Scholar
  6. 6.
    McWilliams JM, Zaslavsky AM, Meara E, et al. Health insurance coverage and mortality among the near-elderly. Health Aff (Millwood). 2004;23:223–33.CrossRefGoogle Scholar
  7. 7.
    Hadley J, Waidmann T. Health insurance and health at age 65: implications for medical care spending on new Medicare beneficiaries. Health Serv Res. 2006;41:429–51.PubMedCrossRefGoogle Scholar
  8. 8.
    McWilliams JM, Zaslavsky AM, Meara E, et al. Impact of Medicare coverage on basic clinical services for previously uninsured adults. JAMA. 2003;290:757–64.PubMedCrossRefGoogle Scholar
  9. 9.
    An overview of health and retirement study components. Available at: Accessed March 10, 2005.Google Scholar
  10. 10.
    Mayfield D, McLeod G, Hall P. The CAGE questionnaire: validation of a new alcoholism screening instrument. Am J Psychiatry. 1974;131:1121–3.PubMedGoogle Scholar
  11. 11.
    Super N. Medigap: Prevalence, Premiums, and Opportunities for Reform. Washington, DC: National Health Policy Forum; 2002.Google Scholar
  12. 12.
    Heisler M, Langa KM, Eby EL, et al. The health effects of restricting prescription medication use because of cost. Med Care. 2004;42:626–34.PubMedCrossRefGoogle Scholar
  13. 13.
    Fillenbaum GG, Burchett BM, Welsh KA. The 20-Item Word List Test as a Measure of Cognitive Functioning in the Health and Retirement Survey: Norms and Validity for White, African-American, and Hispanic Respondents, Health and Retirement Study Working Paper Series, 94-005; 1993. University of Michigan, Ann Arbor, MI.Google Scholar
  14. 14.
    Zhang J, Yu KF. What’s the relative risk? A method of correcting the odds ratio in cohort studies of common outcomes. JAMA. 1998;280:1690–1.PubMedCrossRefGoogle Scholar
  15. 15.
    Ayanian JZ, Kohler BA, Abe T, et al. The relation between health insurance coverage and clinical outcomes among women with breast cancer. N Engl J Med. 1993;329:326–31.PubMedCrossRefGoogle Scholar
  16. 16.
    Roetzheim RG, Gonzalez EC, Ferrante JM, et al. Effects of health insurance and race on breast carcinoma treatments and outcomes. Cancer. 2000;89:2202–13.PubMedCrossRefGoogle Scholar
  17. 17.
    Roetzheim RG, Pal N, Gonzalez EC, et al. Effects of health insurance and race on colorectal cancer treatments and outcomes. Am J Public Health. 2000;90:1746–54.PubMedCrossRefGoogle Scholar
  18. 18.
    Canto JG, Rogers WJ, French WJ, et al. Payer status and the utilization of hospital resources in acute myocardial infarction: a report from the National Registry of Myocardial Infarction 2. Arch Intern Med. 2000;160:817–23.PubMedCrossRefGoogle Scholar
  19. 19.
    Sada MJ, French WJ, Carlisle DM, et al. Influence of payor on use of invasive cardiac procedures and patient outcome after myocardial infarction in the United States. Participants in the National Registry of Myocardial Infarction. J Am Coll Cardiol. 1998;31:1474–80.PubMedCrossRefGoogle Scholar
  20. 20.
    Goldman DP, Bhattacharya J, McCaffrey DF, et al. Effect of insurance on mortality in an HIV-positive population in care. J Am Stat Assoc. 2004;96:883–94.CrossRefGoogle Scholar
  21. 21.
    Lurie N, Ward NB, Shapiro MF, et al. Termination from Medi-Cal—does it affect health? N Engl J Med. 1984;311:480–4.PubMedCrossRefGoogle Scholar
  22. 22.
    Lurie N, Ward NB, Shapiro MF, et al. Termination of Medi-Cal benefits. A follow-up study one year later. N Engl J Med. 1986;314:1266–8.PubMedCrossRefGoogle Scholar
  23. 23.
    Franks P, Clancy CM, Gold MR. Health insurance and mortality: evidence from a national cohort. JAMA. 1993;270:737–41.PubMedCrossRefGoogle Scholar
  24. 24.
    Sorlie PD, Johnson NJ, Backlund E, et al. Mortality in the uninsured compared with that in persons with public and private health insurance. Arch Intern Med. 1994;154:2409–16.PubMedCrossRefGoogle Scholar
  25. 25.
    Jensen GA. Health insurance of the near elderly: a growing concern. Med Care. 1998;36:107–9.PubMedCrossRefGoogle Scholar
  26. 26.
    Bindman AB, Haggstrom DA. Small steps or a giant leap for the uninsured? JAMA. 2003;290:816–8.PubMedCrossRefGoogle Scholar
  27. 27.
    Sloan FA, Conover CJ. Life transitions and health insurance coverage of the near elderly. Med Care. 1998;36:110–25.PubMedCrossRefGoogle Scholar
  28. 28.
    Short PF, Shea DG, Powell MP. Health insurance for Americans approaching age sixty-five: an analysis of options for incremental reform. J Health Polit Policy Law. 2003;28:41–76.PubMedCrossRefGoogle Scholar
  29. 29.
    Miller W, Vigdor ER, Manning WG. Covering the uninsured: what is it worth? Health Aff (Milwood). 2004;W4:157–67.Google Scholar

Copyright information

© the Society of General Internal Medicine 2006

Authors and Affiliations

  • David W. Baker
    • 1
    • 2
  • Joseph Feinglass
    • 1
    • 2
  • Ramon Durazo-Arvizu
    • 3
  • Whitney P. Witt
    • 1
    • 4
  • Joseph J. Sudano
    • 5
  • Jason A. Thompson
    • 1
  1. 1.Division of General Internal Medicine, Department of Medicine Feinberg School of MedicineNorthwestern UniversityChicagoUSA
  2. 2.Institute for Healthcare Studies, Feinberg School of MedicineNorthwestern UniversityChicagoUSA
  3. 3.Department of Preventive Medicine and EpidemiologyLoyola University Chicago-Stritch School of MedicineChicagoUSA
  4. 4.Buehler Center on Aging, Feinberg School of MedicineNorthwestern UniversityChicagoUSA
  5. 5.Center for Health Care Research and PolicyCase Western Reserve University at MetroHealth Medical CenterClevelandUSA

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