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  • Title: The Italian version of the lower extremity functional scale was reliable, valid, and responsive.
    Author: Cacchio A, De Blasis E, Necozione S, Rosa F, Riddle DL, di Orio F, De Blasis D, Santilli V.
    Journal: J Clin Epidemiol; 2010 May; 63(5):550-7. PubMed ID: 19913388.
    Abstract:
    OBJECTIVE: To determine the measurement properties of an Italian Version of the Lower Extremity Functional Scale (LEFS) in patients with lower extremity musculoskeletal dysfunction. STUDY DESIGN AND SETTING: This is a prospective methodological study of repeated measures with a sample of 250 consecutive patients. Reliability, validity, and responsiveness were evaluated. RESULTS: The Italian version of the LEFS showed a high degree of internal consistency with a Cronbach alpha of 0.94 (95% confidence interval [CI]: 0.91, 0.96). The test-retest reliability was high for both intra-interviewer and inter-interviewer measures with an ICC((2,1 and 2,k)) of 0.91 (95% CI: 0.86, 0.93) and 0.89 (95% CI: 0.83, 0.91), respectively. The LEFS showed a better correlation with the 36-Item Short-Form Health Survey (SF-36) physical component summary score rather than with the SF-36 mental component summary score both at the initial assessment (r=0.61 and 0.26, respectively) and at the discharge (r=0.72 and 0.22, respectively). Receiver operating characteristic curve analysis revealed a large responsiveness for the LEFS (area under the curve [AUC]=0.97) and a moderate responsiveness for the SF-36 (AUC=0.68). CONCLUSION: The Italian version of the LEFS is a valid, reliable, and responsive tool that can be used to measure function in Italian patients with lower extremity musculoskeletal dysfunction.
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