Table 2.

Ecological momentary assessment (EMA) response and compliance-related results from nutrition and physical activity studies in youth.

Citation	Initial enrollmenta	Analytical sample sizeb	Average answered EMA survey prompts (per participant) M (SD)c	Average compliance ratee	Average latency (>15 minutes)f
Berkman et al [22]	44	NRfg	NRfg	Electronic: 96% Paper and pencil: 70%	Electronic: 40.1% Paper and pencil: 73.2%
Biddle et al [14]	991	948	NRfg	NRfg	71.7%
Biddle et al [15]	623	550	NRfg	NRfg	NRfg
Carels et al [23]	30	NRfg	Lapses: 11.8 (10.9) Temptations: 8.7 (8.3) Random prompts: 18.3 (8.3)	NRfg	N/A
Dunton et al [16]	568	524	24.3 (3.4)	83% (SD=9.4)	0%
Dunton et al [24]	121	108	31.2a	78%	NRfg
Gorely et al [17]	1604	1371	NRfg	50%	74.1%
Grenard et al [25]	158	158	Random: 11.8a Eating events: 13.4a Evening report: 6.58a	Random: 71% Evening reports: 95%	NRfg
Mak et al [18]	-	642	N/A	NRfg	N/A
Rouse et al [26]	147	84	NRfg	57%	NRfg
Rusby et al [19]	82	80	74.9a	Total: 69%a	0%
Spook et al [20]	30	30	4.3	44%	NRfg
Thomas et al [27]	43	39	31.3%a	71%	NRfg

^aInitial enrollment: number of participants who consented to the study.

^bAnalytical sample size: number of participants in the main analysis.

^cAverage answered EMA survey prompts (per participant): average of number of survey prompts each participant responded to.

^dAverage compliance rate: average of number of answered surveys out of total planned EMA surveys per participant, can include compliance for each monitoring period.

^eAverage latency (>15 minutes): the average time between prompting to participants answered the prompt.

^fNumbers were hand calculated from information available.

^gNR^g: not reported in paper.