References
- Hopman-Rock M, Odding E, Hofman A, Kraaimaat FW, Bijlsma JWJ. Physical and psychosocial disability in elderly subjects in relation to pain in the hip and/or knee. J Rheumatol 1996;23:1037–44.
- Miedema HS. Reuma onderzoek meerdere echelons (ROME): basisrapport (Research on rheumatic disorders in several settings (ROME): general report). Leiden, The Netherlands: Nederlands Instituut voor Preventieve Gezondheidszorg TNO, 1993.
- Odding E. Locomotor disability in elderly (dissertation). Rotterdam: Erasmus University, 1992.
- Scott DL. Guidelines for the diagnosing, investigation and management of osteoarthritis of the hip and knee. Report of a joint working group of the Society for Rheumatology and the Research Unit of the Royal College of Physicians. J R Coll Physicians Lond 1993;27:391–6.
- Dieppe P. Management of hip osteoarthritis. BMJ 1995;311:853–7.
- Hochberg MC, Altman RD, Brandt KD, Clark BM, Dieppe PA, Griffin MR, et al. Guidelines for the medical management of osteoarthritis. Part 1. Osteoarthritis of the Hip. Arthr Rheum 1995;38:1535–40.
- Lamberts H, Wood M, editors. International classification of primary care. New York: Oxford University Press, 1987.
- Goldstein H. Multilevel statistical models. London: Ed-ward Arnold, 1995.
- Pringler M, Ward P, Chilvers C. Assessment of the com-pleteness and accuracy of computer medical records in four practices committed to recording data on computer. Br J Gen Pract 1995;45:537–41.
- Ridderikhoff J. Methods in medicine: a descriptive study of physicians' behaviour. Dordrecht, The Netherlands: Kluwer Academic Publishers, 1989.
- March L, Irwig L, Schwartz J, Simpson J, Chock C, Brooks P. N of 1 trials comparing a nonsteroidal anti-infl-ammatory drug with paracetamol in osteoarthritis. BMJ 1994;309:1041–5.
- Bradley JD, Brandt KD, Katz BP, Kalasinski LA, Ryan SI. Comparison of an antiinflammatory dose of ibuprufen, an analgesic dose of ibuprufen, and acetaminophen in the treatment of patients with osteoarthritis of the knee. N Engl J Med 1991;325:87–91.
- Phillips AC, Polisson RP, Simon LS. NSAIDs and the elderly. Toxicity and economic implication. Drugs Aging 1997;10:119–30.
- Altman R, Alarcon G, Appelrouth D, Bloch D, Borenstein D, Brandt K, et al. The American College of Rheumatol-ogy Criteria for the Classification and Reporting of Os-teoarthritis of the Hip. Arthritis Rheum 1991;34:505–14.
- Bierma-Zeinstra SMA, Bohnen AM, Ginai AZ, Prins A, Verhaar JAN. Validity of ACR criteria for diagnosing hip osteoarthritis in primary care research. J Rheumatol 1999;26:1129–33.