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REFERENCES

  • 1
    Guccione AA, Felson DT, Anderson JJ, Anthony JM, Zhang Y, Wilson PW, et al. The effects of specific medical conditions on the functional limitations of elders in the Framingham Study. Am J Public Health 1994; 84: 3527.
  • 2
    Davis M, Ettinger W, Neuhaus John, Mallon K. Knee osteoarthritis and physical functioning: evidence from the NHANES I Epidemiologic Followup Study. J Rheumatol 1991; 18: 5918.
  • 3
    Ettinger W, Davis M, Neuhaus J. Long-term physical functioning in persons with knee osteoarthritis from NHANES I: effects of comorbid medical conditions. J Clin Epidemiol 1994; 47: 80915.
  • 4
    Sharma L, Song J, Felson D, Cahue S, Shamiyeh E, Dunlop D. The role of alignment in disease progression and functional decline in knee osteoarthritis. JAMA 2001; 286: 18895.
  • 5
    Rejeski W, Miller M, Foy C, Messier S, Rapp S. Self-efficacy and the progression of functional limitations and self-reported disability in older adults with knee pain. J Gerontol B Psychol Sci Soc Sci 2001; 56: S2615.
  • 6
    Miller ME, Rejeski WJ, Messier SP, Loeser RF. Modifiers of change in physical functioning in older adults with knee pain: the Observational Arthritis Study in Seniors (OASIS). Arthritis Rheum 2001; 45: 3319.
  • 7
    Sharma L, Cahue S, Song J, Hayes K, Pai YC, Dunlop D. Physical functioning over three years in knee osteoarthritis: role of psychosocial, local mechanical, and neuromuscular factors. Arthritis Rheum 2003; 48: 335970.
  • 8
    Dunlop DD, Semanik P, Song J, Manheim LM, Shih V, Chang RW. Risk factors for functional decline in older adults with arthritis. Arthritis Rheum 2005; 52: 127482.
  • 9
    Van Dijk GM, Dekker J, Veenhof C, van den Ende CH, for the CARPA Study Group. Course of functional status and pain in osteoarthritis of the hip or knee: a systematic review of the literature. Arthritis Rheum 2006; 55: 77985.
  • 10
    Dunlop DD, Song J, Semanik PA, Sharma L, Chang RW. Physical activity levels and functional performance in the Osteoarthritis Initiative: a graded relationship. Arthritis Rheum 2011; 63: 12736.
  • 11
    Van Dijk GM, Veenhof C, Spreeuwenberg P, Coene N, Burger BJ, van Schaardenburg D, et al. Prognosis of limitations in activities in osteoarthritis of the hip or knee: a 3-year cohort study. Arch Phys Med Rehabil 2010; 91: 5866.
  • 12
    Roos EM, Roos HP, Lohmander L, Ekdahl C, Beynnon B. Knee injury and Osteoarthritis Outcome Score (KOOS)—development of a self-administered outcome measure. J Orthop Sports Phys Ther 1998; 78: 8896.
  • 13
    Altman RD, Hochberg M, Murphy WA Jr, Wolfe F, Lequesne M. Atlas of individual radiographic features in osteoarthritis. Osteoarthritis Cartilage 1995; 3 Suppl A: 370.
  • 14
    Cohen J. Weighted kappa: nominal scale agreement with provision for scaled disagreement or partial credit. Psychol Bull 1968; 70: 21320.
  • 15
    Landis RJ, Koch GG. The measurement of observer agreement for categorical data. Biometrics 1977; 33: 15974.
  • 16
    Bellamy N, Buchanan WW, Goldsmith CH, Campbell J, Stitt LW. Validation study of WOMAC: a health status instrument for measuring clinically important patient relevant outcomes following total hip and knee arthroplasty in osteoarthritis. J Orthop Rheumatol 1988; 1: 95108.
  • 17
    Bellamy N, Buchanan WW, Goldsmith CH, Campbell J, Stitt LW. Validation study of WOMAC: a health status instrument for measuring clinically important patient relevant outcomes to anti-rheumatic drug therapy in patients with osteoarthritis of the hip or knee. J Rheumatol 1988; 15: 183340.
  • 18
    McHorney CA, Ware JE, Raczek AE. The MOS 36-item Short-Form Health Survey (SF-36): II. Psychometric and clinical tests of validity in measuring physical and mental health selection. Med Care 1993; 31: 24763.
  • 19
    McHorney CA, Ware JE Jr, Lu JF, Sherbourne CD. The MOS 36-item Short-Form Health Survey (SF-36). III. Tests of data quality, scaling assumptions, and reliability across diverse patient groups. Med Care 1994; 32: 4066.
  • 20
    Gandhi S, Salmon J, Zhao S, Lambert B, Gore P, Conrad K. Psychometric evaluation of the 12-item Short-Form Health Survey (SF-12) in osteoarthritis and rheumatoid arthritis clinical trials. Clin Ther 2001; 23: 108098.
  • 21
    Guralnik JM, Ferrucci L, Simonsick EM, Salive ME, Wallace RB. Lower-extremity function in persons over the age of 70 years as a predictor of subsequent disability. N Engl J Med 1995; 332: 55661.
  • 22
    Radloff L. The CES-D Scale: a self-report depression scale for research in the general population. Appl Psychol Meas 1977; 1: 385401.
  • 23
    Katz JN, Chang LC, Sangha O, Fossel AH, Bates DW. Can comorbidity be measured by a questionnaire rather than medical record review? Med Care 1996; 34: 7384.
  • 24
    Washburn RA, Smith KW, Jette AM, Janney CA. The Physical Activity Scale for the Elderly (PASE): development and evaluation. J Clin Epidemiol 1993; 46: 15362.
  • 25
    Rantanen T, Era P, Heikkinen E. Maximal isometric strength and mobility among 75-year old men and women. Aging 1994; 23: 1327.
  • 26
    Rantanen T, Era P, Heikkinen E. Physical activity and the changes in maximal isometric strength in men and women from the age of 75 to 80 years. J Am Geriatr Soc 1997; 45: 143945.
  • 27
    Kellgren JH, Lawrence JS. Radiological assessment of osteo-arthrosis. Ann Rheum Dis 1957; 16: 494502.
  • 28
    Bandura A. Self-efficacy mechanism in physiological activation and health-promoting behavior. In: Madden J, editor. Neurobiology of learning, emotion, and affect. New York: Raven Press; 1991. p. 22970.
  • 29
    Scopaz KA, Piva SR, Wisniewski S, Fitzgerald K. Relationships of fear, anxiety, and depression with physical function in patients with knee osteoarthritis. Arch Phys Med Rehabil 2009; 90: 186673.
  • 30
    Somers TJ, Keefe FJ, Pells JJ, Dixon KE, Waters SJ, Riordan PA, et al. Pain catastrophizing and pain-related fear in osteoarthritis patients: relationships to pain and disability. J Pain Symptom Manage 2009; 37: 86372.
  • 31
    Fitzgerald GK, Piva SR, Irrgang JJ. Reports of joint instability in knee osteoarthritis: its prevalence and relationship to physical function. Arthritis Rheum 2004; 51: 9416.
  • 32
    Felson DT, Niu J, McClennan C, Sack B, Aliabadi P, Hunter DJ, et al. Knee buckling: prevalence, risk factors, and associated limitations in function. Ann Intern Med 2007; 147: 53440.
  • 33
    Steultjens MP, Dekker J, Bijlsma JW. Avoidance of activity and disability in patients with osteoarthritis of the knee: the mediating role of muscle strength. Arthritis Rheum 2002; 46: 17848.
  • 34
    Van Baar ME, Dekker J, Lemmens JA, Oostendorp RA, Bijlsma JW. Pain and disability in patients with osteoarthritis of hip or knee: the relationship with articular, kinesiological, and psychological characteristics. J Rheumatol 1998; 25: 12533.
  • 35
    O'Reilly S, Jones A, Muir KR, Doherty M. Quadriceps weakness in knee osteoarthritis: the effect on pain and disability. Ann Rheum Dis 1998; 57: 58894.
  • 36
    Salaffi F, Cavalieri F, Nolli M, Ferracciolli G. Analysis of disability in knee osteoarthritis: relationship with age and psychological variables but not with radiographic score. J Rheumatol 1991; 18: 15816.
  • 37
    Summers MN, Haley WE, Reveille JD, Alarcon GS. Radiographic assessment and psychologic variables as predictors of pain and functional impairment in osteoarthritis of the knee or hip. Arthritis Rheum 1988; 31: 2049.
  • 38
    Mallen CD, Peat G, Thomas E, Lacey R, Croft P. Predicting poor functional outcome in community-dwelling older adults with knee pain: prognostic value of generic indicators. Ann Rheum Dis 2007; 66: 145661.
  • 39
    White DK, Zhang Y, Niu J, Keysor JJ, Nevitt MC, Lewis CE, et al. Do worsening knee radiographs mean greater chances of severe functional limitation? Arthritis Care Res (Hoboken) 2010; 62: 14339.
  • 40
    Jordan KP, Wilkie R, Muller S, Myers H, Nicholls E. Measurement of change in function and disability in osteoarthritis: current approaches and future challenges. Curr Opin Rheumatol 2009; 21: 52530.
  • 41
    Bandura A. Health promotion by social cognitive means. Health Educ Behav 2004; 31: 14364.
  • 42
    Bandura A. Social cognitive theory: an agentic perspective. Annu Rev Psychol 2001; 52: 126.
  • 43
    Tucker JM, Welk GJ, Beyler NK. Physical activity in U.S. adults: compliance with the Physical Activity Guidelines for Americans. Am J Prev Med 2011; 40: 45461.
  • 44
    Martin KA, Rejeski WJ, Miller ME, James MK, Ettinger WH Jr, Messier SP. Validation of the PASE in older adults with knee pain and physical disability. Med Sci Sports Exerc 1999; 31: 62733.