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Related Concept Videos

Models of Health Promotion and Illness Prevention I01:25

Models of Health Promotion and Illness Prevention I

A model is a theoretical way to understand a concept or an idea. Models can overcome barriers to health regardless of diverse economic and cultural backgrounds. In addition, models make the task easier by providing different ways to approach complex issues. There are two major health promotion models: the health belief model and the health promotion model.
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Models of Health Promotion and Illness Prevention II01:18

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The person's health status fluctuates continually, varying from being in good health to becoming ill and returning to being healthy. To understand the concept of illness prevention, there are two models. First, the health-illness continuum model is a graphic representation of an individual's wellness. It states that a person is considered healthy in the absence of physical disease and the presence of good emotional health.
The agent-host-environment model states that disease results from...

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Related Experiment Video

Updated: May 9, 2026

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The first AI-based Chatbot to promote HIV self-management: A mixed methods usability study.

Yuanchao Ma1,2,3,4, Sofiane Achiche1, Gavin Tu5

  • 1Department of Biomedical Engineering, Polytechnique Montréal, Montreal, Quebec, Canada.

HIV Medicine
|October 10, 2024
PubMed
Summary

MARVIN, an AI chatbot, shows high usability and acceptability for HIV self-management support. Further development can enhance its potential by addressing comprehension and platform limitations.

Keywords:
CanadaHIVantiretroviralartificial intelligencechatbotconversational agentdigital healthfeasibilityimplementation sciencemixed methodsmobile phonepatient and stakeholder engagementself‐managementtelehealthusability

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Area of Science:

  • Digital Health
  • Artificial Intelligence in Healthcare
  • HIV Self-Management

Background:

  • MARVIN is an AI-powered chatbot designed to offer continuous, expert-validated information for individuals managing HIV.
  • The study aimed to evaluate the feasibility, usability, and acceptability of MARVIN.

Purpose of the Study:

  • To assess the feasibility of integrating MARVIN into HIV self-management.
  • To evaluate MARVIN's usability, including perceived ease of use, usefulness, attitude, and behavioral intention.
  • To determine the acceptability of MARVIN among users.

Main Methods:

  • A mixed-methods approach was employed at the McGill University Health Centre.
  • Participants engaged in 20 conversations with MARVIN over three weeks and completed usability questionnaires.
  • Qualitative data was gathered through semi-structured interviews to identify barriers and facilitators.

Main Results:

  • Study retention was 70% with 28 participants surveyed and nine interviewed.
  • MARVIN demonstrated high usability (mean 69.9/68) and acceptability (mean 23.8/24).
  • Facilitators included real-time information, accessibility, and perceived emotional safety; barriers involved limited comprehension and platform constraints.

Conclusions:

  • MARVIN exhibits significant global usability for HIV self-management.
  • Findings support MARVIN's potential as a digital health tool for people with HIV.
  • Recommendations for future development include improving comprehension and feature sets.