Methods
The present cross-sectional study is based on baseline questionnaire data from the COPE-study, which is a nonrandomized controlled trial (Briefly, participating children were recruited in collaboration with two well-established multicomponent lifestyle camps in Denmark. Children from 7-14 years of age, who struggle with overweight/obesity, low self-esteem, and/or unhappiness, could be referred to attend camp for 10 weeks. The lifestyle camps focus on a healthy lifestyle and aim to improve QoL in children. All children attending camp from October 2020 to March 2022 were invited to participate and parents/guardians provided written consent for their child to participate in this study.