. 2022 Jun 22;24(6):e35285. doi: 10.2196/35285

Table 4.

Changes in children’s and parents’ health outcomes across digital phenotypes (N=214).

Participants and health outcomes			Child phenotypes					Parent phenotypes
			Chi-square (df)		P value		Chi-square (df)			P value
Children
	BMI z scores	0.5 (3)		.93		9.1 (4)^a			.06^a
	Total energy, daily (kcal per day)	7.2 (3)^a		.07^a		8.2 (4)^a			.08^a
	Healthy Eating Index (range 0-100 points)	0.3 (3)		.96		1.9 (4)			.76
	Fruits and vegetables (daily servings)	0.2 (3)		.98		3.6 (4)			.47
	Saturated and trans fat (g per day)	5.4 (3)		.15		5.5 (4)			.24
	Total fiber (g per day)	1.5 (3)		.68		1.5 (4)			.84
	Total sugar (g per day)	11.8 (3)^a		.01^a		5.4 (4)			.25
	Sugary beverages (kcal per day)	6.7 (3)^a		.09^a		5.5 (4)			.24
	Total physical activity (minutes per week)	2.5 (3)		.47		0.6 (4)			.96
	Fitbit (steps per day)	2.1 (3)		.55		3.2 (4)			.52
	Screen time (minutes per day)	4.9 (3)		.18		2.3 (4)			.69
Parents
	Daily frequency of sugary beverages (times per day)	N/A^b		N/A		1.2 (4)			.88
	Daily frequency of fruit juice (times per day)	N/A		N/A		6.5 (4)			.16
	Fruit and vegetables (servings per day)	N/A		N/A		2.4 (4)			.67
	Walking (minutes per day)	N/A		N/A		4.0 (4)			.41
	Moderate and vigorous physical activity (minutes per day)	N/A		N/A		2.0 (4)			.75
	Screen time (minutes per week)	N/A		N/A		7.1 (4)			.13

^aIndicate significant (P<.05) or borderline significant (P<.10) interactions (time×digital phenotype) for which pairwise comparisons between phenotypes were further explored.

^bN/A: not applicable.