Reliability and Construct Validity of Three Self-report Questionnaires Assessing Dual-Task Difficulties in People With Multiple Sclerosis: An International Study.
Zuhal Abasıyanık, Ludovico Pedullà, Turhan Kahraman, Mieke D'Hooge, Carme Santoyo-Medina, Bernardita Soler, Andrea Tacchino, Renee Veldkamp, Edwin-Roger Meza-Murillo, Areen Omar, Ethel Ciampi, Serkan Özakbaş, Daphne Kos, Alon Kalron, Peter Feys
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引用次数: 0
Abstract
Objective: To evaluate the reliability and validity of the dual-tasking questionnaire (DTQ), dual-task screening list (DTSL), and dual-task impact on daily life activities questionnaire (DIDA-Q).
Design: Multicenter, cross-sectional study SETTING: Persons with multiple sclerosis (pwMS) were recruited from 7 multiple sclerosis centers across 6 countries (Belgium, Chile, Italy, Israel, Spain, and Turkey).
Participants: A total of 356 pwMS (mean age 47.5±11.5y, expanded disability status scale, 3.79±1.83) were enrolled.
Interventions: Not applicable MAIN OUTCOME MEASURES: The reliability (internal consistency, test-retest, and measurement error) and construct validity (structural and convergent) were assessed.
Results: The DTQ, DTSL, and DIDA-Q demonstrated excellent test-retest reliability (intraclass correlation coefficients [95% CI], 0.84 [0.80-0.87] to 0.90 [0.87-0.92]) and internal consistency (Cronbach α: 0.86-0.96). As hypothesized, the 3 questionnaires showed a strong correlation with each other, moderate-to-strong correlations with other self-report questionnaires (perceived walking difficulties, fatigue, and fear of falling), and low-to-moderate correlations with cognitive information processing speed, manual dexterity, and dual-task walking performance (walking with word list generation task), showing convergent validity. The DIDA-Q exhibited systematically superior properties. These results were also verified in subsets from 6 different countries. In the structural validity analysis, all questionnaires displayed 2 main factors, allocated as "motor-driven" and "cognitive-driven" subscales.
Conclusions: The DTQ, DTSL, and DIDA-Q have good-to-excellent measurement properties, with the highest properties observed in DIDA-Q. The use of these self-reported questionnaires can be used in research and clinical practice to assess the effect of dual-task difficulties on the daily life of ambulatory pwMS.
期刊介绍：
The Archives of Physical Medicine and Rehabilitation publishes original, peer-reviewed research and clinical reports on important trends and developments in physical medicine and rehabilitation and related fields. This international journal brings researchers and clinicians authoritative information on the therapeutic utilization of physical, behavioral and pharmaceutical agents in providing comprehensive care for individuals with chronic illness and disabilities.
Archives began publication in 1920, publishes monthly, and is the official journal of the American Congress of Rehabilitation Medicine. Its papers are cited more often than any other rehabilitation journal.
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