Interventions to prevent obesity in children aged 12 to 18 years old

Objectives This is a protocol for Cochrane Review (intervention). The objectives are as follows: overall aim of the review to determine effectiveness interventions prevent obesity in 12 18‐year‐old children and adolescents. four are: evaluate effects that modify dietary intake on changes zBMI score, BMI serious adverse events among adolescents; physical activity, sedentary behaviour, sleep, play and/or structured exercise combined both activity/movement behaviours compare with those children. secondary designed explore if, how, why zBMI/BMI varies depending following PROGRESS factors. Place residence Race/ethnicity/culture/language Occupation Gender/sex Religion Education Socioeconomic status Social capital acronym intended ensure there explicit consideration health inequity, unfair difference disease burden, when conducting research adapting evidence inform design new (O'Neill 2014). describes factors contribute inequity. Recent work race religion UK suggested these critical (Rai 2019). We will also collect, from RCTs, information about costs so policymakers can use source which they may prepare cost‐effectiveness analyses.