Statistical Analysis
A posteriori power analysis showed that a sample size of 92 children is enough to detect small-to-medium effect sizes (ie, 0.3 SDs), assuming an α error of .05 and 80% statistical power. Data were analyzed between February 1, 2020, and July 14, 2022. Characteristics of the study participants are presented as mean (SD) or frequency (percentage). Prior to analyses, raw scores from each outcome were winsorized (when needed) to limit the influence of extreme values.