“…Nevertheless, some studies showed only effects on part of the population 21,29 , or "mixed effects" 19,37,52 . Of the 10 remaining studies, which did not clearly show an effect on BMI, 9 had, at least, a significant influence on health factors 32,36,39,40,42,45,50,53,54 (e.g., physical, psychological or nutritional ones). To illustrate, Smith et al 53 showed that "significant intervention effects were found for screen time (mean SE: -30 10.08min/d; p=.03), sugar-sweetened beverage consumption (mean: -0.6 0.26 glass/d; P=.01)".…”