title: Cross-cultural adaptation, reliability and validity of the Turkish version of the Upper Limb Functional Index (ULFI).
abstract: METHODS
  Clinical measurement.
  
  
  BACKGROUND
  The Upper Limb Functional Index (ULFI) is a patient reported outcome (PRO) measure with sound clinimetric properties and clinical viability for determination of upper limb function.
  The aims of this study were to cross-culturally adapt the ULFI for Turkish-speaking patients (ULFI-Tk) and investigate the reliability and validity in patients with upper limb problems. Patients (n=l02, age 49.1±16.6) with upper limb disorders were consecutively recruited. All participants completed the ULFI-Tk and the Disability of Arm, Shoulder and Hand Turkish-version (DASH-Tk) criterion at baseline and day-three.
  
  
  RESULTS
  The ULFI-Tk demonstrated good internal consistency (α=0.87), moderate criterion validity (DASH-Tk:r=0.68;p<0.05), moderate reliability (ICC2:1=0.72,CI=0.58-0.80) and strong error measurement (SEM=2.94;MDC90=5.35). Exploratory factor analysis demonstrated a dual factor structure that explained 31.2% of total variance.
  
  
  CONCLUSIONS
  The ULFI-Tk is a reliable and valid PRO that could be used to assess upper limb musculoskeletal disorders in Turkish speaking patients
  
  
  METHODS
  Class 2.
authors.affiliation: Baskent University, Faculty of Health Sciences, Department of Physiotherapy and Rehabilitation, Ankara, Turkey. Electronic address: etonga@baskent.edu.tr.
authors.forename: Eda
authors.initials: E
authors.lastname: Tonga
authors.affiliation: Baskent University, Faculty of Health Sciences, Department of Physiotherapy and Rehabilitation, Ankara, Turkey.
authors.forename: Neslihan
authors.initials: N
authors.lastname: Durutürk
authors.affiliation: Centre for Healthy Activities, Sport and Exercise, Faculty of Science, University of the Sunshine Coast Queensland, Sippy Downs, Australia.
authors.forename: Philip C
authors.initials: PC
authors.lastname: Gabel
authors.affiliation: Baskent University, Faculty of Medicine, Department of Biostatistics, Ankara, Turkey.
authors.forename: Agah
authors.initials: A
authors.lastname: Tekindal
mesh_terms: D000328:Adult; D000368:Aged; D003431:Cross-Cultural Comparison; D003466:Cultural Characteristics; D005260:Female; D006305:Health Status Indicators; D006801:Humans; D008297:Male; D008875:Middle Aged; D009140:Musculoskeletal Diseases / Q000503:physiopathology* / Q000534:rehabilitation*; D063868:Patient Outcome Assessment; D020127:Recovery of Function / Q000502:physiology*; D015203:Reproducibility of Results; D057566:Self Report; D014175:Translating; D014421:Turkey; D034941:Upper Extremity / Q000502:physiology*
keywords: Factor analysis; Reliability; Turkish; Upper limb outcome; Validity