The INTERconNEcT-EDs app-based self-help program for people with eating disorders: a usability and qualitative study

Area of Science:

• Digital Health
• Psychiatry
• Human-Computer Interaction

Background:

• Mobile applications offer accessible, cost-effective interventions for eating disorders (EDs).
• User engagement and compliance remain significant challenges in digital ED interventions.
• The INTERconNEcT-EDs program utilizes the aChiral Content app for guided self-help (GSH), integrating multimedia, peer support, and group therapy.

Purpose of the Study:

• To evaluate the usability and user experience of the aChiral Content mobile application.
• To assess the effectiveness of the aChiral Content app in delivering the INTERconNEcT-EDs program to individuals with EDs or disordered eating symptoms.

Main Methods:

• A mixed-methods design was employed with sixteen participants (outpatients and community members).
• Quantitative data were collected using the System Usability Scale (SUS).
• Qualitative feedback was gathered through "think aloud" tasks and semi-structured interviews, followed by thematic analysis.

Main Results:

• The application achieved a satisfactory mean SUS score of 73.3, indicating good usability.
• Qualitative feedback highlighted the usefulness and motivational impact of video-clips and workbooks.
• Users appreciated content creators with lived experience, fostering empathy and perceived support.
• Forum groups and online sessions promoted community, emotional sharing, and reduced isolation.

Conclusions:

• The aChiral Content app shows satisfactory usability and acceptability for individuals with EDs.
• User-centered design, multimedia resources, and peer involvement enhance engagement in digital ED interventions.
• The app holds potential for wider implementation and scalable use in digital ED interventions.