• 1
    Wolfe F, Michaud K. Data collection, maintenance, and analysis for rheumatic disease research [review]. Rheum Dis Clin North Am 2004; 30: 75368.
  • 2
    Alarcon GS, Roseman J, Bartolucci AA, Friedman AW, Moulds JM, Goel N, et al. Systemic lupus erythematosus in three ethnic groups. II. Features predictive of disease activity early in its course. LUMINA Study Group: lupus in minority populations, nature versus nurture. Arthritis Rheum 1998; 41: 117380.
  • 3
    Jordan J, Luta G, Renner J, Dragomir A, Hochberg M, Fryer J. Knee pain and knee osteoarthritis severity in self-reported task specific disability: the Johnston County Osteoarthritis Project. J Rheumatol 1997; 24: 13449.
  • 4
    Pincus T, Sokka T, Kavanaugh A. Quantitative documentation of benefit/risk of new therapies for rheumatoid arthritis: patient questionnaires as an optimal measure in standard care [review]. Clin Exp Rheumatol 2004; 22: S2633.
  • 5
    Fransen J, Langenegger T, Michel BA, Stucki G. Feasibility and validity of the RADAI, a self-administered rheumatoid arthritis disease activity index. Rheumatology (Oxford) 2000; 39: 3217.
  • 6
    Kvien TK, Glennas A, Knudsrod OG, Smedstad LM. The validity of self-reported diagnosis of rheumatoid arthritis: results from a population survey followed by clinical examinations. J Rheumatol 1996; 23: 186671.
  • 7
    Wang PS, Benner JS, Glynn RJ, Winkelmayer WC, Mogun H, Avorn J. How well do patients report noncompliance with antihypertensive medications? A comparison of self-report versus filled prescriptions. Pharmacoepidemiol Drug Saf 2004; 13: 119.
  • 8
    Stewart M. The validity of an interview to assess a patient's drug taking. Am J Prev Med 1987; 3: 95100.
  • 9
    Pincus T, Swearingen C, Wolfe F. Toward a multidimensional Health Assessment Questionnaire (MDHAQ): assessment of advanced activities of daily living and psychological status in the patient-friendly health assessment questionnaire format. Arthritis Rheum 1999; 42: 222030.
  • 10
    Van Riel PL, Schumacher HR Jr. How does one assess early rheumatoid arthritis in daily clinical practice? Best Pract Res Clin Rheumatol 2001; 15: 6776.
  • 11
    Rosner B. Fundamentals of biostatistics. 5th ed. Boston: Duxbury Press; 2000.
  • 12
    Sim J, Wright CC. The kappa statistic in reliability studies: use, interpretation and sample size requirements. Phys Ther 2005; 85: 25768.
  • 13
    Nunally J, Bernstein IH. Psychometric theory. 3rd ed. New York: McGraw-Hill; 1994.
  • 14
    Schneeweiss S, Avorn J. A review of uses of health care utilization databases for epidemiologic research on therapeutics [review]. J Clin Epidemiol 2005; 58: 32337.
  • 15
    Urquhart J. The odds of three nons when an aptly prescribed medicine is not working: non-compliance, non-absorption, non-response. Br J Clin Pharmacol 2002; 54: 21220.
  • 16
    Morisky DE, Green LW, Levine DM. Concurrent and predictive validity of a self-reported measure of medication adherence. Med Care 1986; 24: 6774.
  • 17
    Choo PW, Rand CS, Inui TS, Lee ML, Cain E, Cordeiro-Breault M, et al. Validation of patient reports, automated pharmacy records, and pill counts with electronic monitoring of adherence to antihypertensive therapy. Med Care 1999; 37: 84657.