Table 3.

Filters for the EGM.

Category	Data items
Context	Income level: low income; lower‐middle income; upper‐middle income; global (with at least one LMIC study included) Countries Region: East Asia & Pacific, Europe & Central Asia, Latin America & Caribbean, Middle East & North Africa, North America, South Asia, Western Central Africa, Eastern Central Africa Humanitarian context: Study or review explicitly mentions that the MHPSS intervention (as defined by IASC guidelines) was conducted in a humanitarian or conflict‐affected region. COVID‐19: Study or review explicitly mentions having been conducted in the context of the COVID‐19 pandemic or including studies conducted in the context of the COVID‐19 pandemic. Physical activity: study or review includes physical activity interventions—physical activity is ‘any body movement that is produced by the contraction of skeletal muscles that increase energy expenditure’ whereas exercise is ‘a subset of physical activity that is planned, structured and deliberate’. Format: Individual, dyad and group‐based interventions
Population	Age group: early childhood (0–4); middle childhood (5–9); early adolescence (10–14); late adolescence (15–19) Gender/sex: girl/female; boy/male; other Sub‐groups: Children in alternative care, children with disabilities, LGBTQIA+ children, ethnic or racial minorities, child labourer, married children, street children, children with chronic health conditions, pregnant adolescents and adolescent parents, and migrant and forcibly displaced children.
Study design	Systematic review Randomised controlled trial Quasi‐experimental study Mixed‐methods study Threshold of number of participants or number of studies