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. 2009 Dec;4(4):362-7.
doi: 10.1007/s11552-009-9191-x. Epub 2009 Apr 21.

The validity, reliability, responsiveness, and bias of the Manchester-Modified Disability of the Arm, Shoulder, and Hand score in hand injuries

Wasim S Khan  1 , Bernice Dillon, Manish Agarwal, Max Fehily, Matthew Ravenscroft
Affiliations

The validity, reliability, responsiveness, and bias of the Manchester-Modified Disability of the Arm, Shoulder, and Hand score in hand injuries

Wasim S Khan et al. Hand (N Y). 2009 Dec.

Abstract

The Manchester-Modified Disability of Arm, Shoulder and Hand questionnaire (M(2) DASH) was developed by the authors as a modification to the original DASH questionnaire. In this study, we assessed the validity, reliability, responsiveness, and bias of the M(2) DASH questionnaire for hand injuries using completed M(2) DASH, Patient Evaluation Measure, and Michigan Hand Outcome questionnaires from 40 patients. The M(2) DASH scores showed significant positive correlations with the Patient Evaluation Measure and Michigan Hand Outcome scores suggesting validity. There was also no evidence of a statistical difference in the M(2) DASH scores when the condition had stabilized suggesting good test-retest reproducibility and reliability. The effect size and the standardized response mean for the M(2) DASH score were greater than those for the Patient Evaluation Measure and Michigan Hand Outcome scores establishing that the M(2) DASH is highly responsive. There was no gender, hand dominance, or dominant side injured bias for the M(2) DASH score. There was, however, a relatively weak association between age and the M(2) DASH score at presentation. We conclude that the M(2) DASH questionnaire is a robust region-specific outcome measure. It is a valid and responsive questionnaire with test-retest reliability proven for hand injuries in this study. Gender, handedness, and side injured did not cause bias in the responses.

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Figures

Figure 1
Figure 1
The M2 DASH questionnaire.
Figure 2
Figure 2
Scatter plots for M2 DASH and PEM scores (a), M2 DASH and MHO scores (b), and PEM and MHO scores (c).
See this image and copyright information in PMC

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