title: Cross-cultural adaptation and validation of the Portuguese version of the Knee Outcome Survey-Activities of Daily Living Scale (KOS-ADLS).
abstract: 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.
authors.affiliation: Faculty of Human Kinetics, Center for Research in Physiotherapy, Technical University of Lisbon, Lisbon, Portugal. ruigoncalves@estescoimbra.pt
authors.forename: Rui Soles
authors.initials: RS
authors.lastname: Gonçalves
authors.forename: Jan
authors.initials: J
authors.lastname: Cabri
authors.forename: João Páscoa
authors.initials: JP
authors.lastname: Pinheiro
mesh_terms: 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
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