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Methodology for Establishing a Community-Wide Life Laboratory for Capturing Unobtrusive and Continuous Remote Activity and Health Data

Methodology for Establishing a Community-Wide Life Laboratory for Capturing Unobtrusive and Continuous Remote Activity and Health Data

Published on: July 27, 2018

Combining Subjective Perceptions and Objective Behavioral Metrics With the Elderly Digital Twin System: Quantitative

Ziaullah Momand¹, Pornchai Mongkolnam¹, Debajyoti Pal¹

¹School of Information Technology, King Mongkut's University of Technology Thonburi, 126 Pracha Uthit Rd, Bang Mod, Thung Khru, Bangkok, 10140, Thailand, 66 24709892.

|May 26, 2026

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This study found that a digital twin (DT) system for older adult care is highly usable by informal caregivers. Integrating subjective and objective measures confirmed strong performance and user engagement, offering insights for technology refinement.

Area of Science:

Gerontology and Health Informatics
Human-Computer Interaction
Caregiver Support Technologies

Background:

The increasing elderly population necessitates advanced technologies for home-based care.
Digital twin (DT) systems show potential for supporting informal caregivers.
Usability of DT systems among caregivers requires thorough evaluation.

Purpose of the Study:

To assess the usability of a digital twin (DT) system designed for older adult care.
To employ a dual-method evaluation integrating subjective and objective caregiver performance data.

Main Methods:

Fifty caregivers evaluated the DT system using the System Usability Scale (SUS).
Objective usability was measured via system activity logs (task completion, time, errors, abandonment).

Keywords:

System Usability Scale caregiver support elderly digital twin usability study user engagement score

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A composite user engagement score was calculated and correlated with SUS ratings.

Main Results:

Caregivers reported excellent usability with a mean SUS score of 80.45.
System logs indicated high task completion (94.08%) and low abandonment (2.66%).
User engagement significantly correlated with and predicted usability, with distinct caregiver engagement clusters identified.

Conclusions:

Combining subjective and objective metrics offers a robust evaluation of DT systems for elder care.
The evaluated DT system demonstrates strong usability for informal caregivers.
Findings provide actionable insights for improving caregiver support technologies.