0.5 second audio snippet captured by the app (coughs and non-coughs)
Participant for whom at least 5 minutes of longitudinal tracking has been registered
Forced or voluntary cough such as those which (a) take place during "onboarding" or (b) are collected via the "Elicit coughs" feature (ie, "non-onboarding elicited coughs)"
The initial coughs collected from a participant at enrollment, prior to "longitudinal" monitoring
The continuous monitoring period after onboarding
A signal, generated every ten minutes, to indicate that the app is actively tracking coughs longitudinally (used to determine tracked person-time)