• 1
    Centers for Disease Control and Prevention. Impact of arthritis and other rheumatic conditions on the health-care system. MMWR Morb MortalWkly Rep 1999; 48: 34953.
  • 2
    Yelin E, Herrndorf A, Trupin L, Sonneborn D. A national study of medical care expenditures for musculoskeletal conditions: the impact of health insurance and managed care. Arthritis Rheum 2001; 44: 11609.
  • 3
    Badley EM, Rasooly I, Webster GK. Relative importance of musculoskeletal disorders as a cause of chronic health problems, disability, and health care utilization: findings from the 1990 Ontario Health Survey. J Rheumatol 1994; 21: 50514.
  • 4
    National Institute on Aging. Asset and Health Dynamics Among the Oldest Old Study, Wave 1 and 2 public use dataset. University of Michigan; 1999.
  • 5
    Heeringa S. Technical description of the Asset and Health Dynamics Among the Oldest Old (AHEAD) Study Sample Design. Ann Arbor (MI): University of Michigan Population Studies Center; 1995.
  • 6
    Rodgers W. Comparison of two sampling frames for surveys of the oldest old. In: WarneckerRB, ed. Health Survey Research Methods. Washington (DC): US Department of Health and Human Services; 1996. p. 119122.
  • 7
    Soldo BJ, Hurd MD, Rodgers WL, Wallace RB. Asset and Health Dynamics Among the Oldest Old: an overview of the AHEAD Study. J Gerontol B Psychol Sci Soc Sci 1997; 52: 120.
  • 8
    National Institute on Aging. Health and Retirement Study:∼hrswww/data/index.html, 1998. Accessed January 15, 2002.
  • 9
    Andersen RM. A behavioral model of families' use of health services. Chicago (IL): University of Chicago Center for Health Administration Studies; 1968.
  • 10
    Andersen RM. Revisiting the behavioral model and access to medical care: does it matter? J Health Soc Behav 1995; 36: 110.
  • 11
    Schoenbaum M, Waidmann T. Race, socioeconomic status, and health: accounting for race differences in health. J Gerontol B Psychol Sci Soc Sci 1997; 52 Spec: 6173.
  • 12
    Smith JP. Wealth inequality among older Americans. J Gerontol B Psychol Sci Soc Sci 1997; 52 Spec: 7481.
  • 13
    Shah BV, Barnwell BG, Bieler GS. SUDAAN User's Manual Release 7.5. Research Triangle Park (NC): Research Triangle Institute; 1997.
  • 14
    Williams R. A note on variance estimation for cluster-correlated data. Biometrics 2000; 56: 2189.
  • 15
    United States Bureau of the Census. The Current Populations Survey -A report on methodology. Washington (DC): US Government Printing Office; 1963.
  • 16
    Yelin EH, Trupin LS, Sebesta DS. Transitions in employment, morbidity, and disability among persons ages 51-61 with musculoskeletal and non-musculoskeletal conditions in the US, 1992-1994. Arthritis Rheum 1999; 42: 76979.
  • 17
    Yelin EH. Musculoskeletal conditions and employment. Arthritis Care Res 1995; 8: 3117.
  • 18
    Yelin E. The earnings, income, and assets of persons aged 51-61 with and without musculoskeletal conditions. J Rheumatol 1997; 24: 202430.
  • 19
    Hughes SL, Edelman P, Naughton B, Singer RH, Schuette P, Liang G, et al. Estimates and determinants of valid self-reports of musculoskeletal disease in the elderly. J Aging Health 1993; 5: 24463.
  • 20
    Cleary PD, Jette AM. The validity of self-reported physician utilization measures. Med Care 1984; 22: 796803.
  • 21
    Wallihan DB, Stump TE, Callahan CM. Accuracy of self-reported health services use and patterns of care among urban older adults. Med Care 1999; 37: 66270.
  • 22
    Dunlop DD, Manheim LM, Song J, Chang RW. Gender and ethnic/racial disparities in health care utilization among older adults. J Gerontol B Psychol Sci Soc Sci 2002; 57: 522133.
  • 23
    Stump TE, Johnson RJ, Wolinsky FD. Changes in physician utilization over time among older adults. J Gerontol B Psychol Sci Soc Sci 1995; 50: S45S58.
  • 24
    Verbrugge L. Disability transitions for older persons with arthritis. J Aging Health 1992; 4: 21243.
  • 25
    United States Preventive Services Tasks Force. Guide to clinical preventive services. Baltimore: Williams & Wilkins; 1996.