Table 2.

Themes and quotes related to participant experiences with the ecological momentary assessment app.

EMAa themes	EMA quotes
Easy to use	“The apps are really self-explanatory, which is really nice.” [ID 86] “It’s fast and easy; quick to load and simple to use.” [ID 9]
Notification timing	“I have irregular hours and sometimes I was asleep when the EMA sent a message, and sometimes I would miss it then.” [ID 4] “I received air quality alerts after midnight and before usual waking hours.” [ID 89]
Survey ambiguity and confusion	“The surveys were confusing to answer straightforwardly, and I wasn’t always sure I was being thorough or answering in the right way.” [ID 58]
Technical issues	“For part of the time, the app was not working.” [ID 4] “Getting multiple prompts for surveys with the same questions.” [ID 120] “I almost always had to ‘sync’ before it would show a survey on the page.” [ID 11]

^aEMA: ecological momentary assessment.