• 1
    Natvig B, Bruusgaard D, Eriksen W. Localized low back pain and low back pain as part of widespread musculoskeletal pain: two different disorders? A cross-sectional population study. J Rehabil Med 2001; 33: 215.
  • 2
    Thomas E, Silman AJ, Croft PR, Papageorgiou AC, Jayson MI, Macfarlane GJ. Predicting who develops chronic low back pain in primary care: a prospective study. BMJ 1999; 318: 16627.
  • 3
    McAlindon TE, Cooper C, Kirwan JR, Dieppe PA. Determinants of disability in osteoarthritis of the knee. Ann Rheum Dis 1993; 52: 25862.
  • 4
    Jinks C, Jordan K, Ong BN, Croft P. A brief screening tool for knee pain in primary care (KNEST). II. Results from a survey in the general population aged 50 and over. Rheumatology (Oxford) 2004; 43: 5561.
  • 5
    Bowling A. Research methods in health. Buckingham (UK): Open University Press; 1997.
  • 6
    Lacey R, Lewis M, Jordan K, Jinks C, Sims J. Inter-rater reliability of scoring of pain drawings in a self-report health survey. Spine. In press.
  • 7
    Ware JE, Snow K, Kosinski M, Gandek B. SF36 health survey: manual & interpretation guide. Boston: Health Institute, New England Medical Center; 1993.
  • 8
    Bellamy N. WOMAC osteoarthritis index: a users guide. London: University of Western Ontario; 1996.
  • 9
    Zigmond AS, Snaith RP. The hospital anxiety and depression scale. Acta Psychiatr Scand 1983; 67: 36170.
  • 10
    Jinks C, Jordan K, Croft P. Measuring the population impact of knee pain and disability with the Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC). Pain 2002; 100: 5564.
  • 11
    Andersson HI, Ejlertsson G, Leden I, Rosenberg C. Characteristics of subjects with chronic pain, in relation to local and widespread pain report: a prospective study of symptoms, clinical findings and blood tests in subgroups of a geographically defined population. Scand J Rheumatol 1996; 25: 14654.
  • 12
    Bradley LA, Kersh BC, DeBerry JJ, Deutsch G, Alarcon GA, McLain DA. Lessons from fibromyalgia: abnormal pain sensitivity in knee osteoarthritis. Novartis Found Symp 2004; 260: 25870.
  • 13
    Mangione T. The basics of avoiding non-response errors, chapter 6 in mailed surveys. Thousand Oaks (CA): Sage; 1995.
  • 14
    Office for National Statistics. Population mid-2000: population change in size of selected age-groups within constituent countries of the United Kingdom, mid-1991 to mid-2000. HMSO. URL: http//
  • 15
    Kosek E, Ordeberg G. Lack of pressure pain modulation by heterotopic noxious conditioning stimulation in patients with painful osteoarthritis before, but not following, surgical pain relief. Pain 2000; 88: 6978.