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The Multiple Sclerosis Performance Test MSPT: An iPad-Based Disability Assessment Tool
Published on: June 30, 2014
Reliability and validity of the Persian version of the arm function in multiple sclerosis questionnaire-short form
Marzeih Heidari1, Malahat Akbarfahimi2, Seyed Massood Nabavi3
1School of Rehabilitation Sciences, Rehabilitation Research Center, Department of Occupational Therapy, Iran University of Medical Sciences, Tehran, Iran.
Purpose:
Upper extremity function is crucial for daily living activities. This study aimed to validate the Persian version of the 10-item Arm Function in Multiple Sclerosis Questionnaire-Short Form (AMSQ-SF) in individuals with multiple sclerosis (MS).
Materials And Methods:
In this cross-sectional study involving 201 individuals with MS, the AMSQ-SF was evaluated for reliability (test-retest in 50 participants) and construct validity against a battery of established performance-based and patient-reported outcome measures. Spasticity and disability levels were employed to evaluate the questionnaire's ability to differentiate between various subgroups.
Results:
The Persian AMSQ-SF demonstrated excellent reliability (ICC(2,1) = 0.94) and internal consistency (α = 0.95). Its strong construct validity was evidenced by correlations in the hypothesized directions with measures of grip strength, quality of life, self-reported function, dexterity, and fatigue. It differentiated patients with and without spasticity and various disability levels (p < 0.001). Clinically useful cutoff scores were established to classify impairment severity (mild ≥16, moderate ≥20, severe ≥26) with high sensitivity (70-81%) and specificity (85-95%).
Conclusions:
The AMSQ-SF demonstrates strong validity and reliability as a questionnaire for individuals with MS, suitable for use in both research and rehabilitation settings.
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