Table 2.

Engagement measures over the study period per participant.

Engagement Measure	Median (IQRa)
Initializationsb	15.0 (8.5-19.0)
Session count	29.0 (20.0-40.5)
Session duration (s)	48.8 (35.1-73.1)
Interactionsc	223.0 (182.3-303.5)
Weeks active	4.0 (3.0-4.0)

^aIQR: interquartile range.

^bApp initialization reflects the app being opened without a background session existing.

^cDefined as a participant performing a click event (eg, add drink, log-out, change page, change drinks diary chart).