The construct validity and internal consistency of QuickDASH in pediatric patients with upper extremity fractures
DOI:
https://doi.org/10.2340/17453674.2024.40181Keywords:
Construct validity, Fractures, Internal consistency, Paediatric orthopaedics, Patient reported outcome measure, QuickDASH, ValidationAbstract
Background and purpose: Investigation of treatment options in the pediatric population necessitates the use of valid patient-reported outcome measures (PROMs). We aimed to assess the construct validity and internal consistency of the Quick Disabilities of the Arm, Shoulder and Hand (QuickDASH) in the pediatric population with upper extremity fractures treated both operatively and conservatively.
Patients and methods: QuickDASH, along with several reference PROMs and objective outcome measures, was obtained from 148 5- to 18-year-old patients with a humeral medial epicondyle fracture or a fracture of the distal forearm in a cross-sectional setting with a single follow-up visit. Spearman’s rank correlation and linear regression models were used to assess convergent validity, exploratory factor analysis (EFA) to assess structural validity, and Cronbach’s alpha to investigate internal consistency.
Results: The direction and magnitude of correlation showed by QuickDASH with reference outcome measures was consistent and demonstrated good convergent validity. EFA indicated a 3-factor model with poor fit indices and structural validity remained questionable. Construct validity was considered acceptable overall. QuickDASH demonstrated good internal consistency with an acceptable Cronbach’s alpha (α = 0.75).
Conclusion: QuickDASH demonstrated acceptable construct validity and good internal consistency and is thus a valid instrument, with some limitations, to assess disability and quality of life in pediatric patients with upper extremity fractures.
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Copyright (c) 2024 Niko Kämppä, Sina Hulkkonen, Petra Grahn, Topi Laaksonen, Jussi Repo
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