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. 2021 Jul 27;5(7):e18198. doi: 10.2196/18198

Table 3.

Ontology for usability problems in eHealth applications.

Category of usability problem and usability factor Type of usability factor
Basic system performance

Technical performance General

General system interaction General
Task-technology fit

Fit between system and context of use General

Fit between system and user General

Fit between system and health goals eHealth-specific
Accessibility

Accommodation to perceptual impairments or limitations eHealth-specific

Accommodation to physical impairments or limitations eHealth-specific

Accommodation to cognitive impairments or limitations eHealth-specific
Interface design

Design clarity General

Symbols, icons, and buttons General

Interface organization General

Readability of texts General
Navigation and structure

Navigation General

Structure General
Information and terminology

System information General

Health-related information eHealth-specific
Guidance and support

Error management General

Procedural system information General

Procedural health-related information eHealth-specific
Satisfaction

Satisfaction with system General

Satisfaction with system’s ability to support health goals eHealth-specific