title: Validation of the Dutch version of the Hip disability and Osteoarthritis Outcome Score.
abstract: BACKGROUND
  The Hip disability and Osteoarthritis Outcome Score (HOOS) was constructed in Sweden; this questionnaire has proved to be valid for persons with hip disability with or without hip osteoarthritis (OA) and with high demands of physical function.
  
  
  OBJECTIVE
  The objective of this study was to evaluate the internal consistency, reliability, construct validity, and floor and ceiling effects of the Dutch version of the HOOS questionnaire.
  
  
  METHODS
  After translation with a forward/backward protocol, 74 hip arthroplasty patients and 88 hip OA patients filled in the Dutch HOOS, as well as a Short Form-36 (SF-36), an Oxford Hip Score (OHS) and a VAS-pain questionnaire.
  
  
  RESULTS
  The Dutch version of the HOOS questionnaire achieved excellent scores in all of the clinimetric properties.
  
  
  CONCLUSIONS
  The Dutch HOOS questionnaire has a good internal consistency and reliability. Moreover, the construct validity is good and no floor and ceiling effects were found. The HOOS is a good instrument for patients with different stadia of hip OA.
authors.affiliation: Department of Orthopaedics, Erasmus MC, Rotterdam, The Netherlands. i.b.degroot@erasmusmc.nl
authors.forename: I B
authors.initials: IB
authors.lastname: de Groot
authors.forename: M
authors.initials: M
authors.lastname: Reijman
authors.forename: C B
authors.initials: CB
authors.lastname: Terwee
authors.forename: S M A
authors.initials: SM
authors.lastname: Bierma-Zeinstra
authors.forename: M
authors.initials: M
authors.lastname: Favejee
authors.forename: E M
authors.initials: EM
authors.lastname: Roos
authors.forename: J A N
authors.initials: JA
authors.lastname: Verhaar
mesh_terms: D000203:Activities of Daily Living; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D004185:Disability Evaluation; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D015207:Osteoarthritis, Hip / Q000175:diagnosis*; D010147:Pain Measurement / Q000379:methods; D011788:Quality of Life; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D012720:Severity of Illness Index; D011795:Surveys and Questionnaires / Q000592:standards*