Table 2.

Characteristics of the participants (n=889), zBMI, snack and beverage intake, perceived behavioral control, social influences, and attitudes.

Characteristics			% or mean (SDa)
Demographics
	Overweight	18.1
	Boys	4.8
	General education	46.1
	Technical education	34.7
	Vocational education	19.2
	Age	14.69 (0.81)
App use
	Use fitness apps	17.6%
	Use nutrition apps	7.6%
	Use both fitness and nutrition apps	1.7%
	Frequency of use of fitness apps (0-7)	0.54 (1.47)
	Frequency of use of nutrition apps (0-7)	0.16 (0.80)
zBMIb , healthy snack, and beverage ratio
	zBMI	0.28 (1.02)
	Healthy snack ratio	37.16 (25.39)
	Healthy beverage ratio	72.67 (24.79)
Healthy eating determinants
	Perceived behavioral control to eat healthy (1-5)	3.36 (0.82)
	Attitude to eat healthy eating for the good taste of healthy foods (1-5)	3.70 (0.78)
	Attitude to eat healthy for overall health (1-5)	3.70 (0.78)
	Attitude to eat healthy for appearance (1-5)	3.03 (0.90)
	Social norm to eat healthy (1-5)	3.12 (0.84)
	Social support to eat healthy (1-5)	2.11 (0.95)

^aSD: standard deviation.

^bzBMI: body mass index z-scores.