Adaptation of the knee quality of life 26-item questionnaire to turkish: cultural adaptation, reliability, and validity

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dc.authorid0000-0001-5151-6865
dc.contributor.authorYaman, Ozlem Nur Tok
dc.contributor.authorYilmaz, Burcu Camcioglu
dc.contributor.authorTugay, Baki Umut
dc.contributor.authorPepe, Ismail Murad
dc.date.accessioned2026-01-24T12:30:54Z
dc.date.available2026-01-24T12:30:54Z
dc.date.issued2025
dc.departmentAlanya Alaaddin Keykubat Üniversitesi
dc.description.abstractIntroduction/objectives Knee osteoarthritis (OA) is a common condition impacting quality of life by limiting daily activities. This study aimed to translate and culturally adapt the Knee Quality of Life 26-item (KQoL-26) questionnaire into Turkish and assess its validity and reliability in individuals with knee OA. Method The study included 182 patients with primary knee OA. Its comprehensibility was piloted with 10 patients and 10 healthcare professionals. Patients provided demographic and clinical information and completed the Short Form-36 (SF-36), Knee Injury and Osteoarthritis Outcome Score (KOOS), Western Ontario and McMaster University Osteoarthritis Index (WOMAC), and the Turkish KQoL-26. SF-36, KOOS, and WOMAC assessed the construct validity of the KQoL-26. To measure test-retest reliability, the KQoL-26 was re-administered after three days. Results The KQoL-26 demonstrated high internal consistency with a Cronbach's alpha of 0.965. Subscale alpha values were 0.945 (physical functioning), 0.915 (activity limitations), and 0.903 (emotional functioning). Test-retest analysis revealed Intraclass Correlation Coefficient (ICC) values from 0.791 to 0.954 for items and 0.948 to 0.963 for subscales. The KQoL-26 scores correlated positively with SF-36 and KOOS and negatively with WOMAC (p < 0.001). Conclusion The Turkish KQoL-26 is a valid and reliable tool for assessing knee-related quality of life in knee OA patients.
dc.identifier.doi10.1007/s10067-025-07727-y
dc.identifier.endpage5049
dc.identifier.issn0770-3198
dc.identifier.issn1434-9949
dc.identifier.issue12
dc.identifier.pmid41094300
dc.identifier.scopus2-s2.0-105018839384
dc.identifier.scopusqualityQ1
dc.identifier.startpage5041
dc.identifier.urihttps://doi.org/10.1007/s10067-025-07727-y
dc.identifier.urihttps://hdl.handle.net/20.500.12868/5523
dc.identifier.volume44
dc.identifier.wosWOS:001595142900001
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.indekslendigikaynakPubMed
dc.language.isoen
dc.publisherSpringer London Ltd
dc.relation.ispartofClinical Rheumatology
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WoS_20260121
dc.subjectKnee
dc.subjectReliability and validity
dc.subjectPatient-reported outcome measures
dc.subjectOsteoarthritis
dc.subjectQuality of life
dc.titleAdaptation of the knee quality of life 26-item questionnaire to turkish: cultural adaptation, reliability, and validity
dc.typeArticle

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