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Japanese Health Information Technology Usability Evaluation Scale for Sexually Transmitted Infection-Related
Tomoko Hato1, Hirono Ishikawa1, Kense Todo2
1Graduate School of Public Health, Teikyo University, 2-11-1 Kaga, Itabashi-ku, Tokyo, 173-8605, Japan, 81 3-3964-1211.
JMIR Human Factors
|July 23, 2026
Summary
A new Japanese version of the Health Information Technology Usability Evaluation Scale (Health-ITUES) was developed for a sexually transmitted infection (STI) chatbot. This validated tool supports usability assessments for mobile health technologies in Japan.
Area of Science:
- Digital Health
- Health Informatics
- Human-Computer Interaction
Background:
- Mobile health (mHealth) and conversational AI are increasingly integrated into healthcare.
- Usability evaluations are crucial for the effectiveness of these digital health tools.
- A validated Japanese version of the Health Information Technology Usability Evaluation Scale (Health-ITUES) was previously unavailable.
Purpose of the Study:
- To translate and validate a Japanese version of the Health-ITUES.
- To adapt the scale for a sexually transmitted infection (STI)-related chatbot.
- To facilitate usability assessments of mHealth tools in Japan.
Main Methods:
- Forward and backward translation of the Health-ITUES into Japanese, following established guidelines.
- Expert review and reconciliation of the translated scale.
- Evaluation of reliability and validity in 301 young women using an STI-related chatbot.
Main Results:
- The Japanese Health-ITUES demonstrated high internal consistency (Cronbach's α = 0.85-0.98).
- Confirmatory factor analysis supported acceptable construct validity.
- Scores strongly correlated with user satisfaction and intention to use the chatbot.
Conclusions:
- The Japanese Health-ITUES is a reliable and valid instrument for evaluating STI-related chatbots.
- This validated scale can enhance usability assessments of mHealth and conversational AI in Japan.
- Supports the development and implementation of effective digital health tools for STI prevention.