Table 3.

Outcome measurements usability.

Outcome	How was it measured and analyzed?
Effectiveness	Quantitative: • Task completion rateQualitative: • Reasons for failed completion • Description of errors • Comments from the think aloud method
Efficiency	Time needed to complete a task • Number of tasks that could be completed within the given time limits
Satisfaction	System Usability Scale • Mean, standard deviation and minimum/maximum of the total sore
Acceptance	TAM • Mean, standard deviation and minimum/maximum of the total sore and the four subscales