Table 2.

App use metrics.

	All the participants in the intervention group who downloaded the app (n=423), mean (SD)	Participants in the intervention group without the protocol violation “app use before randomization” (n=393), mean (SD)
Days of use (within 8 wk)	38.4 (18.9)	38.5 (18.7)
Days of use (within 6 mo)	76.8 (61.6)	76.9 (61)
Question blocks answered (within 8 wk)	88.9 (53.3)	89.3 (53.2)
Question blocks answered (within 6 mo)	177 (159.4)	175 (157.8)
Exercises engaged with (within 8 wk)	16.2 (19.2)	16.3 (19.3)
Exercises engaged with (within 6 mo)	19.8 (24.5)	19.9 (24.6)