Applying the blended KTA-Sprint framework to a usability assessment of a digital health module for informal caregivers co-managing heart failure

Abstract

Aims

The main purpose of this study was to design and evaluate core features of a patient-informal caregiver shared digital health module, Caretown, to support chronic disease management. The secondary purpose was to explore the efficacy of ongoing implementation of an innovative KTA-Sprint framework through usability testing of the Caretown module.

Methods

Guided by the KTA-Sprint framework, seven core features of the Caretown module were designed through a multi-method approach: symptom live reports, care cards, trends, medication wallet, medical events timeline, messenger, and caregiver resources.

Results and discussion

We tested the prototype of the module with seven informal caregivers. Findings from quantitative usability metrics and qualitative interviews were translated into required refinements (e.g., how to improve intuitiveness of icons, interpretation of presented data, and system navigation) and mapped onto a subset of Ravden checklist domains. Qualitative usability feedback highlighted opportunities to further improve: visual clarity, consistency, compatibility with user expectations, how to provide informative feedback with clear structure, functionality, flexibility and control. Throughout the design process, we identified considerations for supporting future implementation outcomes including equity, acceptability, adoption, appropriateness, and fidelity. Moreover, the KTA-Sprint framework effectively guided the design and evaluation process for the Caretown module.

Conclusions

This development and usability testing of the Caretown module illustrates the implementation of the rapid and iterative KTA-Sprint framework. Scenario-based testing and multi-method analyses of user feedback allowed for triangulation of feedback. Results informed key considerations for product deployment and future implementation.