• 1
    American College of Rheumatology Subcommittee on Rheumatoid Arthritis Guidelines.Guidelines for the management of rheumatoid arthritis: 2002 update.Arthritis Rheum2002;46:32846.
  • 2
    Pisetsky DS, St.Clair EW.Progress in the treatment of RA.JAMA2001;286:278790.
  • 3
    Pincus T, O'Dell JR, Kremer JM.Combination therapy with multiple disease-modifying antirheumatic drugs in RA: a preventive strategy.Ann Intern Med1999;131:76874.
  • 4
    Strand V, Singh JA.Improved health-related quality of life with effective disease-modifying antirheumatic drugs: evidence from randomized controlled trials.Am J Manag Care2008;14:23454.
  • 5
    MacLean CH, Saag KG, Solomon DH, Morton SC, Sampsel S, Klippel JH.Measuring quality in arthritis care: methods for developing the Arthritis Foundation's quality indicator set.Arthritis Rheum2004;51:193202.
  • 6
    Sokka T, Envalds M, Pincus T.Treatment of rheumatoid arthritis: a global perspective on the use of antirheumatic drugs.Mod Rheumatol2008;18:22839.
  • 7
    Wells G, Shea BJ, O'Connell D, Peterson J, Welch V. The Newcastle-Ottawa Scale (NOS) for assessing the quality of nonrandomised studies in meta-analyses.2011. URL:
  • 8
    Hootman J, Driban J, Sitler MR, Harris KP, Cattano NM.Reliability and validity of three quality rating instruments for systematic reviews of observational studies.Res Synth Methods2011;2:1108.
  • 9
    Neyeloff JL, Fuchs SC, Moreira LB.Meta-analyses and forest plots using a Microsoft Excel spreadsheet: step-by-step guide focusing on descriptive data analysis.BMC Res Notes2012;5:52.
  • 10
    Sokka T, Pincus T.Ascendancy of weekly low-dose methotrexate in usual care of rheumatoid arthritis from 1980 to 2004 at two sites in Finland and the United States.Rheumatology (Oxford)2008;47:15437.
  • 11
    Yelin EH, Trupin LS, Katz PP.Impact of managed care on the use of biologic agents for rheumatoid arthritis.Arthritis Rheum2005;53:42330.
  • 12
    Goycochea-Robles MV, Arce-Salinas CA, Guzman-Vazquez S, Cardiel-Rios MH.Prescription rheumatology practices among Mexican specialists.Arch Med Res2007;38:3549.
  • 13
    Kahn KL, Maclean CH, Wong AL, Rubenstein LZ, Liu H, Fitzpatrick DM, et al.Assessment of American College of Rheumatology quality criteria for rheumatoid arthritis in a pre–quality criteria patient cohort.Arthritis Rheum2007;57:70715.
  • 14
    Yamanaka H, Inoue E, Singh G, Tanaka E, Nakajima A, Taniguchi A, et al.Improvement of disease activity of rheumatoid arthritis patients from 2000 to 2006 in a large observational cohort study IORRA in Japan.Mod Rheumatol2007;17:2839.
  • 15
    Gonzalez-Alvaro I, Descalzo MA, Carmona L, for the Estudio de la Morbilidad y Expresion Clinica de la Artritis Reumatoide Study Group.Trends towards an improved disease state in rheumatoid arthritis over time: influence of new therapies and changes in management approach. Analysis of the EMECAR cohort.Arthritis Res Ther2008;10:R138.
  • 16
    Teh CL, Wong JS.The pattern and clinical manifestations of rheumatoid arthritis in Sarawak General Hospital.Clin Rheumatol2008;27:143740.
  • 17
    DeWitt EM, Lin L, Glick HA, Anstrom KJ, Schulman KA, Reed SD.Pattern and predictors of the initiation of biologic agents for the treatment of rheumatoid arthritis in the United States: an analysis using a large observational data bank.Clin Ther2009;31:187180.
  • 18
    Soderlin MK, Lindroth Y, Turesson C, Jacobsson LT.A more active treatment has profound effects on the health status of rheumatoid arthritis (RA) patients: results from a population-based RA register in Malmö, Sweden, 1997-2005.Scand J Rheumatol2010;39:20611.
  • 19
    Ziegler S, Huscher D, Karberg K, Krause A, Wassenberg S, Zink A.Trends in treatment and outcomes of rheumatoid arthritis in Germany 1997-2007: results from the National Database of the German Collaborative Arthritis Centres.Ann Rheum Dis2010;69:18038.
  • 20
    Montag K, Gingold M, Boers A, Littlejohn G.Disease-modifying anti-rheumatic drug usage, prescribing patterns and disease activity in rheumatoid arthritis patients in community-based practice.Intern Med J2011;41:4505.
  • 21
    Sung YK, Cho SK, Choi CB, Park SY, Shim J, Ahn JK, et al.Korean Observational Study Network for Arthritis (KORONA): establishment of a prospective multicenter cohort for rheumatoid arthritis in South Korea.Semin Arthritis Rheum2012;41:74551.
  • 22
    Edwards CJ, Arden NK, Fisher D, Saperia JC, Reading I, Van Staa TP, et al.The changing use of disease-modifying anti-rheumatic drugs in individuals with rheumatoid arthritis from the United Kingdom General Practice Research Database.Rheumatology (Oxford)2005;44:13948.
  • 23
    Khanna R, Smith MJ.Utilization and costs of medical services and prescription medications for rheumatoid arthritis among recipients covered by a state Medicaid program: a retrospective, cross-sectional, descriptive, database analysis.Clin Ther2007;29:245667.
  • 24
    Schmajuk G, Schneeweiss S, Katz JN, Weinblatt ME, Setoguchi S, Avorn J, et al.Treatment of older adult patients diagnosed with rheumatoid arthritis: improved but not optimal.Arthritis Rheum2007;57:92834.
  • 25
    Grijalva CG, Chung CP, Stein CM, Mitchel EF Jr, Griffin MR.Changing patterns of medication use in patients with rheumatoid arthritis in a Medicaid population.Rheumatology (Oxford)2008;47:10614.
  • 26
    Schmajuk G, Trivedi AN, Solomon DH, Yelin E, Trupin L, Chakravarty EF, et al.Receipt of disease-modifying antirheumatic drugs among patients with rheumatoid arthritis in Medicare managed care plans.JAMA2011;305:4806.
  • 27
    Della Rossa A, Neri R, Talarico R, Doveri M, Consensi A, Salvadori S, et al.Diagnosis and referral of rheumatoid arthritis by primary care physician: results of a pilot study on the city of Pisa, Italy.Clin Rheumatol2010;29:7181.
  • 28
    Westhoff G, Schneider M, Raspe H, Zeidler H, Runge C, Volmer T, et al.Advance and unmet need of health care for patients with rheumatoid arthritis in the German population: results from the German Rheumatoid Arthritis Population Survey (GRAPS).Rheumatology (Oxford)2009;48:6507.
  • 29
    Solomon DH, Ayanian JZ, Yelin E, Shaykevich T, Brookhart MA, Katz JN.Use of disease-modifying medications for rheumatoid arthritis by race and ethnicity in the National Ambulatory Medical Care Survey.Arthritis Care Res (Hoboken)2012;64:1849.
  • 30
    Lukas C, Guillemin F, Landewe R, van der Heijde D, Logeart I, Fautrel B, et al.Factors determining a DMARD initiation in early inflammatory arthritis patients: the ESPOIR cohort study.Clin Exp Rheumatol2009;27:8491.
  • 31
    Kiely P, Williams R, Walsh D, Young A, for the Early Rheumatoid Arthritis Network.Contemporary patterns of care and disease activity outcome in early rheumatoid arthritis: the ERAN cohort.Rheumatology (Oxford)2009;48:5760.
  • 32
    Jamal S, Alibhai SM, Badley EM, Bombardier C.Time to treatment for new patients with rheumatoid arthritis in a major metropolitan city.J Rheumatol2011;38:12828.
  • 33
    De Thurah A, Norgaard M, Johansen M, Stengaard-Pedersen K.Time to methotrexate treatment in patients with rheumatoid arthritis referred to hospital.Scand J Rheumatol2010;39:1925.
  • 34
    Rantalaiho V, Kautiainen H, Virta L, Korpela M, Mottonen T, Puolakka K.Trends in treatment strategies and the usage of different disease-modifying anti-rheumatic drugs in early rheumatoid arthritis in Finland: results from a nationwide register in 2000-2007.Scand J Rheumatol2011;40:1621.
  • 35
    Widdifield J, Bernatsky S, Paterson JM, Thorne JC, Cividino A, Pope J, et al.Quality care in seniors with new-onset rheumatoid arthritis: a Canadian perspective.Arthritis Care Res (Hoboken)2011;63:537.
  • 36
    Bonafede MM, Fox KM, Johnson BH, Watson C, Gandra SR.Factors associated with the initiation of disease-modifying antirheumatic drugs in newly diagnosed rheumatoid arthritis: a retrospective claims database study.Clin Ther2012;34:45767.
  • 37
    Kim SY, Servi A, Polinski JM, Mogun H, Weinblatt ME, Katz JN, et al.Validation of rheumatoid arthritis diagnoses in health care utilization data.Arthritis Res Ther2011;13:R32.
  • 38
    Ng B, Aslam F, Petersen NJ, Yu HJ, Suarez-Almazor ME.Identification of rheumatoid arthritis patients using an administrative database: a Veterans Affairs study.Arthritis Care Res (Hoboken)2012;64:14906.
  • 39
    Katz JN, Barrett J, Liang MH, Bacon AM, Kaplan H, Kieval RI, et al.Sensitivity and positive predictive value of Medicare Part B physician claims for rheumatologic diagnoses and procedures.Arthritis Rheum1997;40:1594600.