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An mHealth App for Users with Dexterity Impairments: Accessibility Study
Daihua Yu1, Bambang Parmanto1, Brad Dicianno2
1Health & Rehab Informatics, Department of Health Information Management, University of Pittsburgh, Pittsburgh, PA, United States.
JMIR Mhealth and Uhealth
|January 10, 2019
Summary
Redesigning the iMHere mobile health app significantly improved usability for individuals with dexterity impairments. The enhanced app reduced task completion time and errors, highlighting the importance of accessible self-management tools.
Area of Science:
- Digital Health
- Human-Computer Interaction
- Rehabilitation Technology
Background:
- The iMHere (interactive mobile health and rehabilitation) system supports self-management for chronic conditions and disabilities.
- Initial iMHere design had accessibility limitations for users with dexterity impairments.
- App accessibility is crucial for effective self-management and usability.
Purpose of the Study:
- To enhance the usability of the iMHere system for individuals with dexterity impairments by improving app accessibility.
- Focus on redesigning the physical presentation and navigability of the iMHere application.
Main Methods:
- A usability study was conducted comparing the original and redesigned iMHere apps.
- Six participants with dexterity impairments evaluated both app versions.
- Accessibility redesign focused on interface elements and navigation pathways.
Main Results:
- The redesigned app required fewer touches and less time to complete tasks (P=.09, P=.06).
- Significantly reduced overall task completion time (P=.006) and error rates (P=.01) were observed with the redesigned app.
- Participant-reported usability significantly increased for the redesigned app (P=.007 overall, P<.001 modules) due to improved ease of use, learnability, interface quality, and reliability.
Conclusions:
- The redesigned iMHere app demonstrated improved usability for users with dexterity impairments.
- Personalization in app development is key to enhancing accessibility.
- Strategies for improving mobile health app usability and accessibility were identified.
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