title: Test-retest reliability at the item level and total score level of the Norwegian version of the Spinal Cord Injury Falls Concern Scale (SCI-FCS).
abstract: Translation of the Spinal Cord Injury Falls Concern Scale (SCI-FCS), and investigation of test-retest reliability on item-level and total-score-level.
  
  
  
  Translation, adaptation and test-retest study.
  
  
  
  A specialized rehabilitation setting in Norway.
  
  
  
  Fifty-four wheelchair users with a spinal cord injury. The median age of the cohort was 49 years, and the median number of years after injury was 13. Interventions/measurements: The SCI-FCS was translated and back-translated according to guidelines. Individuals answered the SCI-FCS twice over the course of one week. We investigated item-level test-retest reliability using Svensson's rank-based statistical method for disagreement analysis of paired ordinal data. For relative reliability, we analyzed the total-score-level test-retest reliability with intraclass correlation coefficients (ICC2.1), the standard error of measurement (SEM), and the smallest detectable change (SDC) for absolute reliability/measurement-error assessment and Cronbach's alpha for internal consistency.
  
  
  
  All items showed satisfactory percentage agreement (≥69%) between test and retest. There were small but non-negligible systematic disagreements among three items; we recovered an 11-13% higher chance for a lower second score. There was no disagreement due to random variance. The test-retest agreement (ICC2.1) was excellent (0.83). The SEM was 2.6 (12%), and the SDC was 7.1 (32%). The Cronbach's alpha was high (0.88).
  
  
  
  The Norwegian SCI-FCS is highly reliable for wheelchair users with chronic spinal cord injuries.
authors.affiliation: a Sunnaas Rehabilitation Hospital , Department of Research , Oslo , Norway.|b Karolinska Institutet , Department of Neurobiology, Care Sciences and Society, Division of Physiotherapy , Huddinge , Sweden.
authors.forename: Kirsti Skavberg
authors.initials: KS
authors.lastname: Roaldsen
authors.affiliation: a Sunnaas Rehabilitation Hospital , Department of Research , Oslo , Norway.|c University of Oslo, Faculty of Medicine , Oslo , Norway.
authors.forename: Åsa Blad
authors.initials: ÅB
authors.lastname: Måøy
authors.affiliation: a Sunnaas Rehabilitation Hospital , Department of Research , Oslo , Norway.|b Karolinska Institutet , Department of Neurobiology, Care Sciences and Society, Division of Physiotherapy , Huddinge , Sweden.
authors.forename: Vivien
authors.initials: V
authors.lastname: Jørgensen
authors.affiliation: a Sunnaas Rehabilitation Hospital , Department of Research , Oslo , Norway.|c University of Oslo, Faculty of Medicine , Oslo , Norway.
authors.forename: Johan Kvalvik
authors.initials: JK
authors.lastname: Stanghelle
mesh_terms: D000058:Accidental Falls / Q000517:prevention & control* / Q000706:statistics & numerical data; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009460:Neurologic Examination / Q000592:standards*; D009664:Norway; D015203:Reproducibility of Results; D013119:Spinal Cord Injuries / Q000453:epidemiology / Q000473:pathology*; D015599:Trauma Severity Indices
keywords: Fear of falling; Nonparametric; Parametric; Psychometrics; SCI
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