Table 5.

Triangulation of quantitative and qualitative usability results

Outcome of interest	Quantitative results	Qualitative results	Triangulation
Ease of use	63.7% of participants found watch easy to use 56.5% found the phone app to be easy to use	- The devices were simple to use because there was little interaction required—passivity is an important facet of making the devices easier to use for older adults - Training and support for dedicated personnel greatly enhanced user experience and made the system easier to use for participants	Convergent / complementary
Anxiety from use	10.2% of participants reported experiencing anxiety or worry from using the system	- Anxiety from use stemmed from not being monitored continuously owing to having to take off the smartwatch for charging or other reasons - Extending the battery life of the smartwatches would have severely curbed feelings of anxiety in participants	Complementary