Table 1.

Statistical analysis of outcomes.

Outcome	Statistical test
Primary
Change in BMI z score at 6 months	Unpaired t test
Secondary
Monthly BMI z score	Repeated measures ANOVA
ABSI	Unpaired t test
Blood pressure	Unpaired t test
Glucose, lipidsa	Unpaired t test
IWQOL-Kids	Mann–Whitney U test
PAQ-A	Mann–Whitney U test
Self-efficacy	Unpaired t test
Step counts	Unpaired t test
Self-reported frequency of application utilization and most relevant features	Repeated measures ANOVA

ABSI, A body shape index (WC normalized to height and weight); ANOVA, analysis of variance; BMI, body mass index; IWQOL-Kids, impact of weight on quality of life-kids; PAQ-A, physical activity questionnaire for adolescents; WC, waist circumference.

^aTriglycerides will be log-transformed to improve normalization of the distribution.