• 1
    Yelin E, Cisternas MG, Pasta DJ, Trupin L, Murphy L, Helmick CG. Medical care expenditures and earnings losses of persons with arthritis and other rheumatic conditions in the United States in 1997: total and incremental estimates. Arthritis Rheum 2004; 50: 231726.
  • 2
    Yelin E, Meenan R, Nevitt M, Epstein W. Work disability in rheumatoid arthritis: effects of disease, social, and work factors. Ann Intern Med 1980; 93: 5516.
  • 3
    Yelin E, Henke C, Epstein W. The work dynamics of the person with rheumatoid arthritis. Arthritis Rheum 1987; 30: 50712.
  • 4
    Allaire SH. Update on work disability in rheumatic diseases. Curr Opin Rheum 2001; 13: 938.
  • 5
    Sokka T, Pincus T. Markers for work disability in rheumatoid arthritis [review]. J Rheumatol 2001; 28: 171822.
  • 6
    Callahan L, Yelin E. The social and economic consequences of rheumatic disease. In: KlippelJ, editor. Primer on the rheumatic diseases. Atlanta: Arthritis Foundation; 2001.
  • 7
    Verstappen SM, Bijlsma JW, Verkleij H, Buskens E, Blaauw AA, ter Borg EJ, et al, and the Utrecht Rheumatoid Arthritis Cohort Study Group. Overview of work disability in rheumatoid arthritis patients as observed in cross-sectional and longitudinal surveys. Arthritis Rheum 2004; 51: 48897.
  • 8
    De Croon EM, Sluiter JK, Nijssen TF, Dijkmans BA, Lankhorst GJ, Frings-Dresen MH. Predictive factors of work disability in rheumatoid arthritis: a systematic literature review. Ann Rheum Dis 2004; 63: 13627.
  • 9
    Sturfelt G, Nived O. Clinical inconsistency, benign course and normal employment rates in unselected systemic lupus erythematosus. Clin Exp Rheumatol 1985; 3: 30310.
  • 10
    Stein H, Walters K, Dilon A, Schulzer M. Systemic lupus erythematosus: a medical and social profile. J Rheumatol 1986; 13: 5706.
  • 11
    Karlson EW, Daltroy LH, Lew RA, Wright EA, Partridge AJ, Roberts WN, et al. The independence and stability of socioeconomic predictors of morbidity in systemic lupus erythematosus. Arthritis Rheum 1995; 38: 26773.
  • 12
    Partridge AJ, Karlson EW, Daltroy LH, Lew RA, Wright EA, Fossel AH, et al. Risk factors for early work disability in systemic lupus erythematosus: results from a multicenter study [review]. Arthritis Rheum 1997; 40: 2199206.
  • 13
    Sutcliffe N, Clarke AE, Gordon C, Farewell V, Isenberg DA. The association of socio-economic status, race, psychosocial factors and outcome in patients with systemic lupus erythematosus. Rheumatology (Oxford) 1999; 38: 11307.
  • 14
    Clarke AE, Penrod J, St Pierre Y, Petri MA, Manzi S, Isenberg DA, et al, and the Tri-Nation Study Group. Underestimating the value of women: assessing the indirect costs of women with systemic lupus erythematosus. J Rheumatol 2000; 27: 2597604.
  • 15
    Boomsma MM, Bijl M, Stegeman CA, Kallenberg CG, Hoffman GS, Tervaert J. Patients' perceptions of the effects of systemic lupus erythematosus on health, function, income, and interpersonal relationships: a comparison with Wegener's granulomatosis. Arthritis Rheum 2002; 47: 196201.
  • 16
    Mau W, Listing J, Huscher D, Zeidler H, Zink A. Employment across chronic inflammatory rheumatic diseases and comparison with the general population. J Rheumatol 2005; 32: 7218.
  • 17
    Freemer M, King T Jr, Criswell L. Association of smoking with dsDNA autoantibody production in systemic lupus erythematosus. Ann Rheum Dis [article online]. 2005. URL:
  • 18
    Parsa A, Lovett DH, Peden EA, Zhu L, Seldin MF, Criswell LA. Renin-angiotensin system gene polymorphisms predict the progression to renal insufficiency among Asians with lupus nephritis. Genes Immun 2005; 6: 21724.
  • 19
    Tan EM, Cohen AS, Fries JF, Masi AT, McShane DJ, Rothfield NF, et al. The 1982 revised criteria for the classification of systemic lupus erythematosus. Arthritis Rheum 1982; 25: 12717.
  • 20
    Hochberg MC. Updating the American College of Rheumatology revised criteria for the classification of systemic lupus erythematosus [letter]. Arthritis Rheum 1997; 40: 1725.
  • 21
    Yelin E, Trupin L, Katz P. The prevalence and impact of managed care for persons with rheumatoid arthritis in 1994 and 1999. Arthritis Rheum 2002; 47: 17280.
  • 22
    Kaplan E, Meier P. Nonparametric estimation from incomplete observations. J Am Stat Soc 1958; 53: 45781.
  • 23
    Cox D. Regression models and life tables (with discussion). J R Stat Soc 1972; B34: 187220.
  • 24
    Lindsey JC, Ryan LM. Tutorial in biostatistics: methods for interval-censored data [published erratum appears in Stat Med 1999;18:890]. Stat Med 1998; 17: 21938.
  • 25
    Wolfe F, Hawley DJ. The longterm outcomes of rheumatoid arthritis. Work disability: a prospective 18 year study of 823 patients. J Rheumatol 1998; 25: 210817.
  • 26
    Yelin E, Trupin L, Katz P, Lubeck D, Rush S, Wanke L. Association between Etanercept use and employment outcomes among patients with rheumatoid arthritis. Arthritis Rheum 2003; 48: 304654.
  • 27
    US Bureau of the Census. Current population survey technical documentation. Washington, DC: US Department of Commerce; 1993.
  • 28
    Wen CP, Tsai SP, Gibson RL. Anatomy of the healthy worker effect: a critical review. J Occup Med 1983; 25: 2839.
  • 29
    Yelin EH, Greenblatt RM, Hollander H, McMaster JR. The impact of HIV-related illness on employment. Am J Public Health 1991; 81: 7984.
  • 30
    Yelin E, Henke J, Katz PP, Eisner MD, Blanc PD. Work dynamics of adults with asthma. Amer J Ind Med 1999; 35: 47280.
  • 31
    National Center for Health Statistics. 2002 National Health Interview Survey (NHIS), Public Use Data Release, NHIS Survey Description, 2003. URL:
  • 32
    Karlson EW, Daltroy LH, Rivest C, Ramsey-Goldman R, Wright EA, Partridge AJ, et al. Validation of a Systemic Lupus Activity Questionnaire (SLAQ) for population studies. Lupus 2003; 12: 2806.
  • 33
    Ware J Jr, Kosinski M, Keller SD. A 12-item short form health survey: construction of scales and preliminary tests. Med Care 1996; 34: 22033.
  • 34
    Ware J, Snow K, Kosinski M, Gandek B. SF-36 Health Survey: manual and interpretation guide. Boston: The Health Institute, New England Medical Center; 1993.
  • 35
    Radloff L. The CES-D scale: a self-report depression scale for research in the general population. Appl Psychol Measurement 1977; 1: 385401.
  • 36
    Stewart A, Ware JJ. Measuring functioning and well-being: the Medical Outcomes Study approach. Durham (NC): Duke University Press; 1992.
  • 37
    Brandt J, Benedict R. Hopkins verbal learning test: revised. Lutz (FL): Psychological Assessment Resources, Inc.; 2001.
  • 38
    Cohen S, Kamarck T, Mermelstein R. A global measure of perceived stress. J Health Soc Behav 1983; 24: 38596.
  • 39
    Pincus T, Swearingen C, Callahan L. A self-report cognitive symptoms inventory to assess patients with rheumatic diseases: results in eosinophilia-myalgia syndrome (EMS), fibromyalgia, rheumatoid arthritis (RA), and other rheumatic diseases [abstract]. Arthritis Rheum 1996; 39 Suppl 9: S261.
  • 40
    Cohen JW, Monheit AC, Beauregard KM, Cohen SB, Lefkowitz DC, Potter DE, et al. The Medical Expenditure Panel Survey: a national information resource. Inquiry 1996–1997; 33: 37389.
  • 41
    Kerwin J, Cantor D, Sheridan S. Results of rounds 3 and 4 of managed care cognitive interviews for the household portion of the MEPS: report to AHCPR from Westat, Inc., Rockville, MD, 1995.
  • 42
    Clarke AE, Esdaile JM, Bloch DA, Lacaille D, Danoff DS, Fries JF. A Canadian study of the total medical care costs for patients with systemic lupus erythematosus and the predictors of costs. Arthritis Rheum 1993; 36: 154859.
  • 43
    Gironimi G, Clarke AE, Hamilton VH, Danoff DS, Bloch DA, Fries JF, et al. Why health care costs more in the US: comparing health care expenditures between systemic lupus erythematosus patients in Stanford and Montreal. Arthritis Rheum 1996; 39: 97987.
  • 44
    Bureau of Labor Statistics. Workers on flexible and shift schedules in May 2004. US Department of Labor; 2005. URL:
  • 45
    The health and retirement study: a longitudinal study of health, retirement, and aging. Survey Research Center, Institute for Social Research, University of Michigan; 2002. URL:
  • 46
    Karasek R, Schwartz J, Theorell T. Job characteristics, occupation, and coronary heart disease. In: Final report to national institute of occupational safety and health. New York: Columbia University; 1982.