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Journal Article

Citation

El Moumni M, Van Eck ME, Wendt KW, Reininga IH, Mokkink LB. Phys. Ther. 2015; 96(6): 908-916.

Affiliation

L.B. Mokkink, PhD, Department of Epidemiology and Biostatistics, VU University Medical Center, Amsterdam, the Netherlands.

Copyright

(Copyright © 2015, American Physical Therapy Association)

DOI

10.2522/ptj.20140589

PMID

26586862

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-reported outcome measure of pain and disability to evaluate the outcome after hand and wrist injuries.

OBJECTIVE: The aim of this study was to evaluate the structural validity of the existing Dutch version of the PRWE (PRWE-NL) in patients with hand or wrist injuries, and to investigate the appropriateness of reporting subscale scores.

DESIGN: This was a retrospective analysis of cross-sectional data of 368 adult patients.

METHODS: All patients aged 18-65 years 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 the structural validity and Cronbach alpha's and coefficients omega are used to investigate internal consistency.

RESULTS: A series of confirmatory factor analyses revealed that all models (i.e. a single factor model, a 2- and 3-correlated factor, 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 an unidimensional trait. In addition, PRWE-NL subscales were associated with unacceptably low levels of reliability independently of the global PRWE-NL factor. LIMITATIONS: Although the sample size was adequate, the response rate was 37.1%. Included were mainly patients with fractures of the wrist or hand, predominantly treated non-surgically.

CONCLUSION: This study suggests that the PRWE-NL measures an unidimensional trait. A single score should be used for the PRWE-NL, without subscale scores.


Language: en

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