Mortality and its predictors in patients with rheumatoid arthritis: a Danish population-based inception cohort study

References

• Smolen JS, Aletaha D, McInnes IB. Rheumatoid arthritis. Lancet 2016;388:2023–38.
   PubMed Web of Science ®Google Scholar
• Sokka T, Abelson B, Pincus T. Mortality in rheumatoid arthritis: 2008 update. Clin Exp Rheumatol 2008;26(Suppl 51):S35–61.
   Web of Science ®Google Scholar
• Ward MM. Recent improvements in survival in patients with rheumatoid arthritis: better outcomes or different study designs? Arthritis Rheum 2001;44:1467–9.
   PubMed Web of Science ®Google Scholar
• Wolfe F, Cathey MA, Roberts FK. The latex test revisited. Rheumatoid factor testing in 8,287 rheumatic disease patients. Arthritis Rheum 1991;34:951–60.
   PubMed Web of Science ®Google Scholar
• Galobardes B, Lynch J, Smith GD. Measuring socioeconomic position in health research. Br Med Bull 2007;81-82:21–37.
   PubMed Web of Science ®Google Scholar
• Munch JR, Svarer M. Mortality and socio-economic differences in Denmark: a competing risks proportional hazard model. Econ Hum Biol 2005;3:17–32.
   PubMed Web of Science ®Google Scholar
• Lund Jensen N, Pedersen HS, Vestergaard M, Mercer SW, Glumer C, Prior A. The impact of socioeconomic status and multimorbidity on mortality: a population-based cohort study. Clin Epidemiol 2017;9:279–89.
   PubMed Web of Science ®Google Scholar
• Iversen L, Andersen O, Andersen PK, Christoffersen K, Keiding N. Unemployment and mortality in Denmark, 1970-80. Brit Med J 1987;295:879–84.
   PubMed Web of Science ®Google Scholar
• Sorlie PD, Rogot E. Mortality by employment status in the National Longitudinal Mortality Study. Am J Epidemiol 1990;132:983–92.
   PubMed Web of Science ®Google Scholar
• Ahs AM, Westerling R. Mortality in relation to employment status during different levels of unemployment. Scand J Public Health 2006;34:159–67.
   PubMed Web of Science ®Google Scholar
• Morrell S, Taylor R, Quine S, Kerr C, Western J. A case-control study of employment status and mortality in a cohort of Australian youth. Soc Sci Med 1999;49:383–92.
   PubMed Web of Science ®Google Scholar
• Lund R, Due P, Modvig J, Holstein BE, Damsgaard MT, Andersen PK. Cohabitation and marital status as predictors of mortality–an eight year follow-up study. Soc Sci Med 2002;55:673–9.
   PubMed Web of Science ®Google Scholar
• Young A, Koduri G, Batley M, Kulinskaya E, Gough A, Norton S, et al. Mortality in rheumatoid arthritis. Increased in the early course of disease, in ischaemic heart disease and in pulmonary fibrosis. Rheumatology (Oxford) 2007;46:350–7.
   PubMed Web of Science ®Google Scholar
• Radovits BJ, Fransen J, Al Shamma S, Eijsbouts AM, Van Riel PL, Laan RF. Excess mortality emerges after 10 years in an inception cohort of early rheumatoid arthritis. Arthritis Care Res 2010;62:362–70.
   PubMed Web of Science ®Google Scholar
• Gabriel SE, Crowson CS, Kremers HM, Doran MF, Turesson C, O’Fallon WM, et al. Survival in rheumatoid arthritis: a population-based analysis of trends over 40 years. Arthritis Rheum 2003;48:54–8.
   PubMed Web of Science ®Google Scholar
• Maradit-Kremers H, Nicola PJ, Crowson CS, Ballman KV, Gabriel SE. Cardiovascular death in rheumatoid arthritis: a population-based study. Arthritis Rheum 2005;52:722–32.
   PubMed Web of Science ®Google Scholar
• Yurkovich M, Avina-Zubieta JA, Thomas J, Gorenchtein M, Lacaille D. A systematic review identifies valid comorbidity indices derived from administrative health data. J Clin Epidemiol 2015;68:3–14.
   PubMed Web of Science ®Google Scholar
• Pedersen JK, Kjaer NK, Svendsen AJ, Horslev-Petersen K. Incidence of rheumatoid arthritis from 1995 to 2001: impact of ascertainment from multiple sources. Rheumatol Int 2009;29:411–15.
   PubMed Web of Science ®Google Scholar
• Pedersen JK, Svendsen AJ, Horslev-Petersen K. Incidence of rheumatoid arthritis in the southern part of Denmark from 1995 to 2001. Open Rheumatol J 2007;1:18–23.
   PubMedGoogle Scholar
• Arnett FC, Edworthy SM, Bloch DA, McShane DJ, Fries JF, Cooper NS, et al. The American Rheumatism Association 1987 revised criteria for the classification of rheumatoid arthritis. Arthritis Rheum 1988;31:315–24.
   PubMed Web of Science ®Google Scholar
• Schmidt M, Pedersen L, Sorensen HT. The Danish civil registration system as a tool in epidemiology. Eur J Epidemiol 2014;29:541–9.
   PubMed Web of Science ®Google Scholar
• Hoier-Madsen M, Nielsen LP, Moller S. [Determination of IgM rheumatoid factors by enzyme-linked immunosorbent assay (ELISA)], In Danish. Ugeskr Laeger 1986;148:2018–21.
   PubMedGoogle Scholar
• Jensen VM, Rasmussen AW. Danish education registers. Scand J Public Health 2011;39:91–4.
   PubMed Web of Science ®Google Scholar
• Petersson F, Baadsgaard M, Thygesen LC. Danish registers on personal labour market affiliation. Scand J Pub Health 2011;39:95–8.
   PubMed Web of Science ®Google Scholar
• Lynge E, Sandegaard JL, Rebolj M. The danish national patient register. Scand J Pub Health 2011;39:30–3.
   PubMed Web of Science ®Google Scholar
• Charlson ME, Pompei P, Ales KL, MacKenzie CR. A new method of classifying prognostic comorbidity in longitudinal studies: development and validation. J Chron Dis 1987;40:373–83.
   PubMedGoogle Scholar
• Norton S, Koduri G, Nikiphorou E, Dixey J, Williams P, Young A. A study of baseline prevalence and cumulative incidence of comorbidity and extra-articular manifestations in RA and their impact on outcome. Rheumatology (Oxford) 2013;52:99–110.
   PubMed Web of Science ®Google Scholar
• Thygesen SK, Christiansen CF, Christensen S, Lash TL, Sorensen HT. The predictive value of ICD-10 diagnostic coding used to assess Charlson comorbidity index conditions in the population-based Danish National Registry of Patients. BMC Med Res Methodol 2011;11:83.
   PubMed Web of Science ®Google Scholar
• Helweg-Larsen K. The danish register of causes of death. Scand J Pub Health 2011;39:26–9.
   PubMed Web of Science ®Google Scholar
• White IR, Royston P, Wood AM. Multiple imputation using chained equations: issues and guidance for practice. Stat Med 2011;30:377–99.
   PubMed Web of Science ®Google Scholar
• Goodson NJ, Wiles NJ, Lunt M, Barrett EM, Silman AJ, Symmons DP. Mortality in early inflammatory polyarthritis: cardiovascular mortality is increased in seropositive patients. Arthritis Rheum 2002;46:2010–19.
   PubMed Web of Science ®Google Scholar
• Primdahl J, Nissen CB, Hørslev-Petersen K. Gender differences in risk factors for cardiovascular disease in outpatients with rheumatoid arthritis. Abstract. Ann Rheum Dis. 2014;73 (Suppl 2):913.
   PubMed Web of Science ®Google Scholar
• Gonzalez A, Icen M, Kremers HM, Crowson CS, Davis JM 3rd, Therneau TM, et al. Mortality trends in rheumatoid arthritis: the role of rheumatoid factor. J Rheumatol 2008;35:1009–14.
   PubMed Web of Science ®Google Scholar
• Gonzalez A, Maradit Kremers H, Crowson CS, Nicola PJ, Davis JM 3rd, Therneau TM, et al. The widening mortality gap between rheumatoid arthritis patients and the general population. Arthritis Rheum 2007;56:3583–7.
   PubMed Web of Science ®Google Scholar
• Humphreys JH, Warner A, Chipping J, Marshall T, Lunt M, Symmons DP, et al. Mortality trends in patients with early rheumatoid arthritis over 20 years: results from the Norfolk Arthritis Register. Arthritis Care Res 2014;66:1296–301.
   PubMed Web of Science ®Google Scholar
• Lacaille D, Avina-Zubieta JA, Sayre EC, Abrahamowicz M. Improvement in 5-year mortality in incident rheumatoid arthritis compared with the general population-closing the mortality gap. Ann Rheum Dis 2017;76:1057–63.
   PubMed Web of Science ®Google Scholar
• Danish Health Authority.  [The Danish Register of Causes of Death. Results and analyses], In Danish (https://sundhedsdatastyrelsen.dk/da/tal-og-analyser/analyser-og-rapporter/andre-analyser-og-rapporter/doedsaarsagsregisteret). Accessed 6 February 2018.
   Google Scholar
• Perk J, De Backer G, Gohlke H, Graham I, Reiner Z, Verschuren M, et al. European Guidelines on cardiovascular disease prevention in clinical practice (version 2012). The fifth joint task force of the European Society of Cardiology and other societies on cardiovascular disease prevention in clinical practice (constituted by representatives of nine societies and by invited experts). Eur Heart J 2012;33:1635–701.
   PubMed Web of Science ®Google Scholar
• Agca R, Heslinga SC, Rollefstad S, Heslinga M, McInnes IB, Peters MJ, et al. EULAR recommendations for cardiovascular disease risk management in patients with rheumatoid arthritis and other forms of inflammatory joint disorders: 2015/2016 update. Ann Rheum Dis 2017;76:17–28.
   PubMed Web of Science ®Google Scholar
• Janlert U, Hammarstrom A. Which theory is best? Explanatory models of the relationship between unemployment and health. BMC Public Health 2009;9:235.
   PubMed Web of Science ®Google Scholar
• Sokka T, Mottonen T, Hannonen P. Mortality in early “sawtooth” treated rheumatoid arthritis patients during the first 8-14 years. Scand J Rheumatol 1999;28:282–7.
   PubMed Web of Science ®Google Scholar
• England BR, Sayles H, Mikuls TR, Johnson DS, Michaud K. Validation of the rheumatic disease comorbidity index. Arthritis Care Res 2015;67:865–72.
   PubMed Web of Science ®Google Scholar
• Tan EM, Smolen JS. Historical observations contributing insights on etiopathogenesis of rheumatoid arthritis and role of rheumatoid factor. J Exp Med 2016;213:1937–50.
   PubMed Web of Science ®Google Scholar
• Sokolove J, Johnson DS, Lahey LJ, Wagner CA, Cheng D, Thiele GM, et al. Rheumatoid factor as a potentiator of anti-citrullinated protein antibody-mediated inflammation in rheumatoid arthritis. Arthritis Rheumatol 2014;66:813–21.
   PubMed Web of Science ®Google Scholar
• Alley DE, Crimmins E, Bandeen-Roche K, Guralnik J, Ferrucci L. Three-year change in inflammatory markers in elderly people and mortality: the Invecchiare in Chianti study. J Am Geriatr Soc 2007;55:1801–7.
   PubMed Web of Science ®Google Scholar
• Harris TB, Ferrucci L, Tracy RP, Corti MC, Wacholder S, Ettinger WH Jr., et al. Associations of elevated interleukin-6 and C-reactive protein levels with mortality in the elderly. Am J Med 1999;106:506–12.
   PubMed Web of Science ®Google Scholar
• Tomasson G, Aspelund T, Jonsson T, Valdimarsson H, Felson DT, Gudnason V. Effect of rheumatoid factor on mortality and coronary heart disease. Ann Rheum Dis 2010;69:1649–54.
   PubMed Web of Science ®Google Scholar