. 2022 Sep 29;6(9):e40572. doi: 10.2196/40572

Table 2.

Compliance rates for primary outcome measures.

Outcome measure			Wave 1						Wave 2
			Compliant/possible n		Participants meeting compliance criteria (%)		Number of valid observations, mean (SD; range)		Compliant/possible n		Compliant (%)		Number of valid observations, mean (SD; range)
Accelerometry^a
	Parent^b	62/99		63		19.4 (7.5; 0-27)		72/84		86		13.4 (4.0; 0-22)
	Child^c	40/100		40		15.5 (8.2; 0-28)		57/85		67		10.8 (5.3; 0-20)
Mobile phone^a
	Android	38/40		95		32.0 (7.6; 7-53)		30/32		94		16.8 (4.8; 2-29)
	iPhone	64/65		98		28.9 (2.9; 18-37)		54/56		96		16.3 (4.4; 0-30)
	EMA^d,^e	105/105		100		26.2 (2.2; 21-32)		85/88		97		48.6 (6.9; 19-60)

^aWave 1 compliance was defined as 21 days of valid data provided; wave 2 compliance was defined as 9 days of valid data provided.

^bWave 1: lost device=1 and battery failure=5; wave 2: lost device=2 and battery failure=2.

^cWave 1: lost device=4 and battery failure=1; wave 2: lost device=3.

^dEMA: ecological momentary assessment.

^eWave 1 compliance was defined as 21 prompts answered; wave 2 compliance was defined as 39 prompts answered.