Abstract
BackgroundThe Michigan Hand Questionnaire (MHQ) is widely used to assess the hand/wrist conditions. We translated the original version into Thai (Thai MHQ) and evaluated its psychometric properties.MethodsAfter receiving permission, the original MHQ was translated and cross-culturally adapted to Thai following standard guidelines. Two hundred and seventeen patients who had hand/wrist injuries or disorders were included in the study. Internal consistency was evaluated using Cronbach’s alpha. Test-retest reliability was analyzed using the intraclass correlation coefficient (ICC). Spearman’s rank correlation among the subscales of Thai MHQ, Thai DASH and Thai EQ-5D-5L and also confirmatory factor analysis (CFA) were used to explore construct validity. The standardized response mean (SRM) was used to evaluate the responsiveness of the Thai MHQ.ResultsAll subscales showed an acceptable Cronbach’s alpha (0.79–0.98). The test-retest reliability of each subscale was good (ICC = 0.83–0.95). In related dimensions, strong correlation was demonstrated between the Activities of daily living subscale of the Thai MHQ and the Common activities subscale in the Thai DASH (r = 0.77, P < 0.0001). For unrelated dimensions, a weak correlation was found between the Aesthetics subscale in the Thai MHQ and the Mobility subscale in the Thai EQ-5D-5L (r = − 0.13, P = 0.05). The Thai MHQ had strong correlation with Thai DASH (r = − 0.79, P < 0.0001) and Thai EQ-5D-5L (r = 0.63, P < 0.0001). CFA showed that the 6-factor model demonstrated an acceptable fit to the data. The SRM of the Thai MHQ was 0.78, indicating relatively large responsiveness. The MIC of Thai MHQ using distribution methods (SEM) was 5.2.ConclusionsThe Thai MHQ provides adequate internal consistency in all subscales as well as good construct validity and reliability for Thai patients and a relatively large standardized response mean at 2 months after treatment.
Highlights
The Michigan Hand Questionnaire (MHQ) is widely used to assess the hand/wrist conditions
The items “What is your ethnic background?”, “What is your racial background?” and “How long after your surgery did you return to the job you were doing before your injury” were removed
The final Thai version was approved by Michigan Center for Hand Outcomes and Innovation Research
Summary
The Michigan Hand Questionnaire (MHQ) is widely used to assess the hand/wrist conditions. The Michigan Hand Outcomes Questionnaire (MHQ) is one of the widely used patient-rated outcome measurement instruments for patients with hand disorders This questionnaire is the subjective assessment for musculoskeletal, neurological or nonspecific pathology which providing the ordinal data type according to The World Health Organization International Classification on Functioning Disability and Health (WHO ICF) summary [13]. Among the benefits of this instrument are its specificity to hand/wrist injuries or disorders, the capacity to evaluate impairment both individually for each hand as well as for both hands together and the ability to assess more aspects including overall hand function, activities of daily living, pain, work performance, satisfaction and specially in aesthetic compared to Disabilities of Arm, Shoulder and Hand (DASH) questionnaire [10, 11, 14]. Previous studies have reported that the MHQ was more responsive than DASH in patients with traumatic hand injury, carpal tunnel syndrome or wrist pain [15, 16]
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