Table 2.

Child- and parent-report compared with Effortless Assessment of Risk States (EARS) app data for total average daily smartphone screen use, before and after the 4-week passive sensing period (N=67).

	Daily device use (4 weeks before sensing), mean (SD)	Daily device use (during 4 weeks of sensing), mean (SD)
Self-report	2 h 45 min (2 h 31 min)	3 h 28 min (2 h 43 min)
Parent report	4 h 3 min (3 h 3 min)	4 h 4 min (3 h 51 min)
EARS app use	N/Aa	3 h 45 min (1 h 55 min)

^aN/A: not applicable.