Statistical Analyses
VIRUS, SENSITIVITY
All analyses were performed using Stata version 15.1 (StataCorp LLC) and the significance level of all statistical analyses was set at Descriptive statistics were generated to examine the participant characteristics and app use. Student The primary analyses for intervention outcomes were performed using linear mixed-effect models to examine changes in child anthropometry, health behaviors, and parental health behaviors, expressed as differences in the means and 95% CI between baseline and 3 months (Aim 1). The Linear mixed-effects models were used to examine changes in health behavior trajectories among participants randomized to the waitlisted control condition before and after being given access to the Aim2Be app (Aim 2). This aim was originally not included in our protocol paper [Sensitivity analyses were conducted to evaluate differences in outcomes between the control and intervention groups to examine the stability of the results when the intervention sample included only those who used the app for at least 30 minutes in total (from baseline to 3 months). Posttest differences in outcome measures at follow-up between the groups were examined using analysis of covariance. The results are presented for both complete case analyses and multiple imputations. Finally, a portion of the 6-month data (n=32 parent-child dyads) was collected after March 2020 (the beginning of lockdown measures enforced in most Canadian provinces to stop the spread of the COVID-19 virus). Therefore, we conducted exploratory analyses to examine the stability of our results when participants were excluded from our analyses.