title: Structural Validity of the Dutch Version of the Patient-Rated Wrist Evaluation (PRWE-NL) in Patients With Hand and Wrist Injuries.
abstract: BACKGROUND
  Hand and wrist injuries are one of the most common injuries seen in adults. The Patient-Rated Wrist Evaluation (PRWE) questionnaire has been developed as a patient-report outcome measure of pain and disability to evaluate the outcome after hand and wrist injuries.
  
  
  OBJECTIVE
  The aims of this study were (1) to evaluate the structural validity of the existing Dutch version of the PRWE (PRWE-NL) in patients with hand or wrist injuries and (2) to investigate the appropriateness of reporting subscale scores.
  
  
  METHODS
  This was a retrospective analysis of cross-sectional data of 368 adult patients.
  
  
  METHODS
  Patients aged 18 to 65 years and treated either surgically or conservatively for an isolated hand or wrist injury were recruited. Patients were excluded if they were unable to speak or read Dutch. Confirmatory factor analyses were used to investigate structural validity, and Cronbach alpha (α) and omega (ω) coefficients were used to investigate internal consistency.
  
  
  RESULTS
  A series of confirmatory factor analyses revealed that all models (ie, a single-factor model, correlated 2- and 3-factor models, and 2 bifactor models) were associated with adequate model fit. However, inspection of the factor loadings, the explained common variance (ECV), and the different coefficient omega values revealed that the PRWE-NL should be considered a measure of a unidimensional trait. In addition, PRWE-NL subscales were associated with unacceptably low levels of reliability independently of the global PRWE-NL factor.
  
  
  CONCLUSIONS
  Although the sample size was adequate, the response rate was 37.1%. Participants were mainly patients with fractures of the wrist or hand, predominantly treated nonsurgically.
  
  
  CONCLUSIONS
  This study suggests that the PRWE-NL measures a unidimensional trait. A single score should be used for the PRWE-NL, without subscale scores.
authors.affiliation: M. El Moumni, MD, PhD, Department of Traumatology, University Medical Center Groningen, University of Groningen, Hanzeplein 1, 9700 RB, Groningen, the Netherlands. m.el.moumni@umcg.nl.
authors.forename: Mostafa
authors.initials: M
authors.lastname: El Moumni
authors.affiliation: M.E. Van Eck, MD, Department of Traumatology, University Medical Center Groningen, University of Groningen.
authors.forename: Merit E
authors.initials: ME
authors.lastname: Van Eck
authors.affiliation: K.W. Wendt, MD, PhD, Department of Traumatology, University Medical Center Groningen, University of Groningen.
authors.forename: Klaus W
authors.initials: KW
authors.lastname: Wendt
authors.affiliation: I.H.F. Reininga, PhD, Department of Traumatology, University Medical Center Groningen, University of Groningen.
authors.forename: Inge H F
authors.initials: IH
authors.lastname: Reininga
authors.affiliation: L.B. Mokkink, PhD, Department of Epidemiology and Biostatistics, VU University Medical Center, Amsterdam, the Netherlands.
authors.forename: Lidwine Brigitta
authors.initials: LB
authors.lastname: Mokkink
mesh_terms: D000328:Adult; D003430:Cross-Sectional Studies; D004185:Disability Evaluation; D005163:Factor Analysis, Statistical; D005260:Female; D006230:Hand Injuries / Q000150:complications / Q000503:physiopathology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D015233:Models, Statistical; D059352:Musculoskeletal Pain / Q000209:etiology; D009426:Netherlands; D012189:Retrospective Studies; D011795:Surveys and Questionnaires; D014954:Wrist Injuries / Q000150:complications / Q000503:physiopathology*