Table 1 Baseline level of interventions in Peru and Effect size and cost data to Reach Target goals

Social marketing in schools

Children and adolescents aged 6–16 years

0%

80% of target population

-0.25 (-0.45, -0.04) BMI reduction

Aceves-Martins et al. (2016) [66]

USD 1.04

Program organization costs, training of teachers and food service staff, extra teaching, and additional curricular activities, such as brochures and books

Cecchini et al. (2010) [67]

Breastfeeding promotion at health centers

Mothers of infants aged 6 months or less

0%

85% of the target population

Average 5.2% (3.5%, 6.5%) reduction in obesity prevalence at age 5

Rollins (2016)[53] and Holla-Bhar (2015)[68]

USD 21.57

Health education to mothers and training health workers and community volunteers

Rollins (2016)[53] and Bhutta et al. (2013)[69]

Healthy school food environment

Children and adolescents aged 6–16 years

3.38%

80% of target population

Boys: 5.1% (0.9%, 9.3%) reduction in overweight prevalence

Girls: 1.8% (-2.8%, 6.4%) reduction in overweight prevalence (Not significant)

Levasseur (2021)[70]

USD 0.19

Basic administration, planning, enforcement, preparation and distribution of posters, and monitoring

Sassi (2010)[71]

Targeted 20% food subsidy for population under the national poverty line

Children and adolescents aged 0–19 years

0%

20.2% of national population (Figure based on proportion of children and adolescents living below the poverty line).

-0.08 (-0.16, 0.00) BMI reduction

Afshin et al. (2017)[65]

USD 0.02

Planning and development, operations, administration, and monitoring

Sassi (2010)[71]