Cross-cultural adaptation and validation of the Portuguese version of the Knee Outcome Survey-Activities of Daily Living Scale (KOS-ADLS).
The objective of this study was to cross-culturally adapt and validate the Portuguese version of the Knee Outcome Survey-Activities of Daily Living Scale (KOS-ADLS). This version was obtained with forward/backward translations, consensus panels and pre-testing. The Portuguese KOS-ADLS and Medical Outcomes Study, 36-item Short Form (SF-36) questionnaires, visual analogue scales (VAS) of pain, disability and discomfort, and a form for patient's characteristics were administered to 168 subjects with knee osteoarthritis (OA). Reliability was acceptable (Cronbach's alpha = 0.91; ICC = 0.97). There were significant correlations with SF-36 physical component subscales, all VAS, and duration of knee OA. The subjects with bilateral knee OA and that need walking aids obtained lower scores (p < 0.001). No floor/ceiling effects were detected. Responsiveness to physical therapy was showed (standardized effect size = 0.62; standardized response mean = 1.02). The Portuguese KOS-ADLS evidenced acceptable reliability, validity, floor/ceiling effects, and responsiveness.
Gonçalves
Rui Soles
RS
Faculty of Human Kinetics, Center for Research in Physiotherapy, Technical University of Lisbon, Lisbon, Portugal. ruigoncalves@estescoimbra.pt
Cabri
Jan
J
Pinheiro
João Páscoa
JP
D000203:Activities of Daily Living; D000368:Aged; D015331:Cohort Studies; D003431:Cross-Cultural Comparison; D004185:Disability Evaluation; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D020370:Osteoarthritis, Knee / Q000175:diagnosis*; D011174:Portugal
Scand J Rheumatol Suppl. 1987;65:85-9
3479839
J Clin Epidemiol. 1997 Mar;50(3):239-46
9120522
Am J Sports Med. 1991 Mar-Apr;19(2):112-8
2039061
J Rheumatol. 1988 Dec;15(12):1833-40
3068365
J Clin Epidemiol. 1993 Dec;46(12):1417-32
8263569
J Orthop Sports Phys Ther. 1998 Aug;28(2):88-96
9699158
Arthritis Care Res. 1999 Jun;12(3):172-9
10513507
Med Care. 1992 Jun;30(6):473-83
1593914
Clin Orthop Relat Res. 2003 Aug;(413):90-105
12897600
J Clin Epidemiol. 2000 May;53(5):459-68
10812317
Acta Med Port. 2000 May-Jun;13(3):119-27
11026151
J Bone Joint Surg Am. 1998 Aug;80(8):1132-45
9730122
Rev Epidemiol Sante Publique. 1984;32(6):408-13
6531504
Qual Life Res. 2002 May;11(3):193-205
12074258
Acta Med Port. 2000 Jan-Apr;13(1-2):55-66
11059056
Spine (Phila Pa 1976). 2000 Dec 15;25(24):3186-91
11124735
J Bone Joint Surg Am. 2001 Oct;83(10):1459-69
11679594
Arthritis Rheum. 1986 Aug;29(8):1039-49
3741515
J Clin Epidemiol. 2007 Jan;60(1):34-42
17161752
Health Technol Assess. 1998;2(14):i-iv, 1-74
9812244
Health Policy. 1990 Dec;16(3):199-208
10109801
Arch Orthop Trauma Surg. 2007 Nov;127(9):781-9
16865400