title: Upper limb assessment in multiple sclerosis: a systematic review of outcome measures and their psychometric properties.
abstract: OBJECTIVE
  To provide an overview of applied upper limb outcome measures in multiple sclerosis (MS) according to the International Classification of Functioning, Disability and Health (ICF) levels and to review their psychometric properties in MS.
  
  
  METHODS
  PubMed and Web of Knowledge.
  
  
  METHODS
  Articles published until June 2013 were selected when written in English, published in the last 25 years, peer reviewed, including >5 persons with MS, and including standardized clinical upper limb outcome measures. Included articles were screened based on title/abstract and full text by 2 independent reviewers. In case of doubt, feedback from a third independent reviewer was obtained. Additionally, references lists were checked for relevant articles. Of the articles, 109 met the selection criteria and were included for data extraction.
  
  
  METHODS
  All reported clinical upper limb outcome measures were extracted from the included studies and classified according to the ICF levels by 2 independent reviewers. In addition, available psychometric properties (reliability, validity, responsiveness) in MS were summarized and discussed.
  
  
  RESULTS
  A diversity of outcome measures assessing impairments on the body functions and structures level (n=33), upper limb capacity (n=11), and performance (n=8) on the activity level were extracted from 109 articles. Hand grip strength and the nine-hole peg test (NHPT) were the most frequently used outcome measures. However, multiple outcome measures are necessary to encapsulate the multidimensional character of the upper limb function. The psychometric properties were insufficiently documented for most of the outcome measures, except for the NHPT.
  
  
  CONCLUSIONS
  The results of this review may help with the selection of appropriate outcome measures and may guide future research regarding the psychometric properties in MS.
authors.affiliation: Rehabilitation Research Institute, BIOMED-Biomedical Research Institute, Faculty of Medicine and Life Sciences, Hasselt University, Hasselt, Belgium. Electronic address: ilse.lamers@uhasselt.be.
authors.forename: Ilse
authors.initials: I
authors.lastname: Lamers
authors.affiliation: Rehabilitation Research Institute, BIOMED-Biomedical Research Institute, Faculty of Medicine and Life Sciences, Hasselt University, Hasselt, Belgium.
authors.forename: Silke
authors.initials: S
authors.lastname: Kelchtermans
authors.affiliation: Rehabilitation Research Institute, BIOMED-Biomedical Research Institute, Faculty of Medicine and Life Sciences, Hasselt University, Hasselt, Belgium.
authors.forename: Ilse
authors.initials: I
authors.lastname: Baert
authors.affiliation: Rehabilitation Research Institute, BIOMED-Biomedical Research Institute, Faculty of Medicine and Life Sciences, Hasselt University, Hasselt, Belgium.
authors.forename: Peter
authors.initials: P
authors.lastname: Feys
mesh_terms: D004185:Disability Evaluation; D005260:Female; D018737:Hand Strength / Q000502:physiology; D006801:Humans; D008297:Male; D009103:Multiple Sclerosis / Q000175:diagnosis / Q000523:psychology / Q000534:rehabilitation*; D053580:Muscle Strength / Q000502:physiology*; D017063:Outcome Assessment, Health Care; D026741:Physical Therapy Modalities; D011594:Psychometrics; D015203:Reproducibility of Results; D012720:Severity of Illness Index; D016896:Treatment Outcome; D034941:Upper Extremity / Q000503:physiopathology*
keywords: Multiple sclerosis; Outcome assessment (health care); Rehabilitation; Reproducibility of results; Upper extremity