Table 1.

Search strategy

Registry	Search strategy
WHO International Clinical Trials Registry Platform (WHO ICTRP)	The “Advanced search” option will be selected, and the following fields will be populated: Title: prevent OR prevention Condition: obesity OR overweight Recruitment status: all Limit: search for clinical trials in children Status: all
Clinicaltrials.gov	The “Advanced search” option will be selected, and the following fields will be populated: Condition or disease: Obesity OR obese OR adiposity OR overweight Age: Child (Birth-17 years) Type of studies: interventional studies Other terms: prevent OR prevention