Digital Sick Day Medication Guidance App Reduces Preventable Hospitalizations

Why It Matters

This research highlights the critical role of user-centered design in creating effective digital health tools. By involving patients throughout the development process, designers can ensure that applications are not only functional but also intuitive and supportive, leading to better adherence and reduced healthcare burdens.

Key Finding

Through iterative design and testing with users, a digital application was developed that addresses critical medication management needs during acute illness, aiming to prevent adverse events and hospitalizations.

Key Findings

• 21 design issues identified through heuristic evaluation.
• 44 design issues identified through usability testing.
• Iterative revisions led to a final design with key user flows and integrated supports for managing medication during acute illness.

Research Evidence

Aim: To iteratively design and develop a digital prototype user interface (UI) for delivering sick day medication guidance (SDMG) to patients with diabetes, cardiovascular disease, or chronic kidney disease.

Method: Mixed Methods Study (Heuristic Evaluation and Usability Testing)

Procedure: The development team used a human-centered design (HCD) approach, conducting iterative heuristic evaluations and usability testing with patients. Prototype revisions were made based on the feedback gathered from these evaluations.

Sample Size: 6 patients (including a patient-caregiver dyad)

Context: Digital health application development for chronic disease management

Design Principle

Iterative user-centered design leads to more effective and usable digital health solutions.

How to Apply

When designing any digital tool intended for patient self-management, prioritize user involvement through methods like heuristic evaluations and usability testing, and be prepared to iterate on the design based on feedback.

Limitations

The study involved a small sample size, and the findings may not be generalizable to all patient populations or chronic conditions.

Student Guide (IB Design Technology)

Simple Explanation: Designing a health app with real patients helps make it easier to use and more helpful, potentially stopping people from going to the hospital unnecessarily.

Why This Matters: This shows how important it is to involve the people who will actually use your design in the creation process, especially for sensitive applications like health management.

Critical Thinking: How might the specific needs of patients with diabetes, cardiovascular disease, or CKD differ, and how could a single application effectively cater to these diverse requirements?

IA-Ready Paragraph: The iterative human-centered design approach, as demonstrated by Babione et al. (2025), is crucial for developing effective digital health tools. By integrating user feedback through methods like heuristic evaluation and usability testing, designers can ensure that applications are intuitive, supportive, and ultimately lead to improved patient outcomes and reduced healthcare utilization.

Project Tips

• Always start by understanding your target user's needs and context.
• Plan for multiple rounds of testing and refinement of your design.

How to Use in IA

• Reference this study when justifying the use of user-centered design methods in your own design project.
• Use the findings to support the importance of iterative testing and refinement in your design process.

Examiner Tips

• Demonstrate a clear understanding of the target user's needs and how your design addresses them.
• Show evidence of user testing and how feedback influenced your design decisions.

Independent Variable: Human-centered design approach (iterative evaluations, usability testing, prototype revisions)

Dependent Variable: Number and severity of design issues identified, user satisfaction, potential reduction in emergency visits/hospitalizations (implied outcome)

Controlled Variables: Type of digital application (SDMG), target patient population (diabetes, CVD, CKD), specific acute illness scenarios

Strengths

• Employs a recognized and effective design methodology (HCD).
• Utilizes a mixed-methods approach for comprehensive evaluation.

Critical Questions

• What are the long-term implications of using such an application on patient autonomy and healthcare provider roles?
• How can the personalization of guidance be further enhanced to account for individual patient variability and preferences?

Extended Essay Application

• Investigate the effectiveness of different digital interface elements in conveying complex medical information to diverse user groups.
• Explore the ethical considerations of deploying AI-driven personalized health guidance in a clinical setting.

Source

Using Human-Centered Design and Development to Create a Digital Sick Day Medication Guidance Application for People With Diabetes, Cardiovascular Disease, or Chronic Kidney Disease: Mixed Methods Study · JMIR Formative Research · 2025 · 10.2196/77240