ArticleJournal of patient-reported outcomes2026
Cross-cultural adaptation and psychometric properties of the Vietnamese version of the Lower Extremity Functional Scale (LEFS) in individuals with knee osteoarthritis.
Article in Journal of patient-reported outcomes, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
objectiveTo translate, cross-culturally adapt, and examine the psychometric properties of the Vietnamese version of the Lower Extremity Functional Scale (LEFS-V) in individuals with knee osteoarthritis (KOA).
designA cross-sectional study.
settingTwo hospitals and two Catholic convents in Vietnam.
participants174 Vietnamese individuals aged ≥ 45 years with KOA were diagnosed based on clinical examination using the National Institute for Health and Care Excellence (NICE) criteria.
main outcome measuresParticipants completed the baseline assessment and 5-7days retest, which included the LEFS-V, Numerical Pain Rating Scale (NPRS), and Knee Injury and Osteoarthritis Outcome Score (KOOS). Psychometric property testing included content validity (CVI), internal consistency (Cronbach's α), test-retest reliability (ICC
resultsStrong content validity with item-CVI from 0.83 to 1.00. LEFS-V demonstrated high internal consistency (Cronbach's α = 0.942) and excellent test-retest reliability (ICC
conclusionThe LEFS-V is a reliable and valid scale for assessing lower extremity functional status in Vietnamese individuals with KOA.
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