The Lower Extremity Functional Scale (LEFS): Scale Development, Measurement Properties, and Clinical Application

摘要: Background and Purpose. The purpose of this study was to assess the reliability, construct validity, sensitivity change Lower Extremity Functional Scale (LEFS). Subjects Methods. LEFS administered 107 patients with lower-extremity musculoskeletal dysfunction referred 12 outpatient physical therapy clinics. during initial assessment, 24 48 hours following then at weekly intervals for 4 weeks. SF-36 (acute version) assessment intervals. A type 2,1 intraclass correlation coefficient used estimate test-retest reliability. Pearson correlations one-way analyses variance were examine validity. Spearman rank-order coefficients relationship between an independent prognostic rating each patient in scores. Results. Test-retest reliability scores excellent ( R =.94 [95% lower limit confidence interval (CI)=.89]). Correlations function subscale component score r =.80 (95% CI=.73) =.64 CI=.54), respectively. There a higher than score. potential error associated on given point time is ±5.3 scale points (90% CI), minimal detectable 9 clinically important difference CI). Conclusion Discussion. reliable, validity supported by comparison SF-36. superior that population. efficient administer applicable research purposes clinical decision making individual patients.