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Health Information Technology and Healthcare Information System

Health Information Technology and Healthcare Information System

Health Information Technology (HIT)
Health Information Technology, commonly called HIT, integrates advanced information systems and technology in healthcare settings. Its primary functions include:

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System Usability Scale Benchmarking for Digital Health Apps: Meta-analysis.

Maciej Hyzy^1,2, Raymond Bond¹, Maurice Mulvenna¹

¹School of Computing, Ulster University, Newtownabbey, United Kingdom.

JMIR Mhealth and Uhealth

|August 18, 2022

Summary

The System Usability Scale (SUS) is suitable for assessing digital health apps (DHAs). This study confirms the SUS benchmark (mean 68) is reliable for evaluating DHA usability, despite initial concerns about its design for mobile applications.

Keywords:

SUS for digital health SUS meta-analysis System Usability Scale digital health digital health apps usability mHealth mHealth SUS scores meta-analysis mHealth usability mobile app mobile health

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Area of Science:

Human-Computer Interaction
Digital Health
Usability Engineering

Background:

The System Usability Scale (SUS) is a standard for evaluating product usability but wasn't specifically designed for mobile or digital health apps (DHAs).
Concerns exist regarding the applicability of the established SUS benchmark (mean 68, SD 12.5) to the unique context of DHAs.

Purpose of the Study:

To investigate the reliability of the standard SUS distribution for benchmarking DHA usability.
To determine if the SUS can be effectively used to assess the usability of digital health applications.

Main Methods:

A systematic literature search was conducted across major databases (ACM, IEEE, PubMed, etc.) for DHA SUS scores from 2011-2021.
117 SUS scores for 114 DHAs were meta-analyzed using R Studio, comparing the DHA SUS distribution to the standard SUS benchmark.
Statistical analysis included Shapiro-Wilk test for normality and a 1-sample, 2-tailed t-test for distribution comparison.

Main Results:

The overall mean SUS score for DHAs was 76.64 (SD 15.12), but this distribution was skewed and not normal.
Excluding 'physical activity' apps (which had a high mean SUS of 83.28), the mean SUS score was 68.05 (SD 14.05).
A 1-sample, 2-tailed t-test showed no statistically significant difference between the DHA SUS distribution (excluding physical activity apps) and the standard SUS benchmark (P=.98).

Conclusions:

The System Usability Scale (SUS) and its benchmark (mean 68, SD 12.5) are confirmed as suitable for evaluating the usability of digital health apps (DHAs).
The study proposes a template for reporting SUS scores to aid future meta-analyses on DHA usability.
Further research is recommended to explore the higher SUS scores observed in physical activity apps and refine DHA SUS benchmarks.