The goal of this observational study is to investigate differences in attained BMI and the proportion of overweight/obesity at school entrance in children who attended kindergartens actively delivering a community-based health promotion and obesity prevention intervention compared to children who attended usual care kindergartens. Further questions it aims to answer are:

• Explore the prevalence of attainted overweight/obesity in children at six years of age, who attended kindergartens delivering intervention compared with usual care kindergartens.
• Explore the development of obesity, overweight and normal weight in children from three-, four- to six years of age, who attended kindergartens delivering intervention.

Inclusion Criteria:

• All children with eligible information on one measure of BMI after school entrance

Exclusion Criteria:

• <7 years of age

The present study is based on data from a total of approximately 3000 children (six-year-olds) at school entrance in the period 2021-2022, of whom approximately 2000 children attended the community-based health promotion and obesity prevention intervention in kindergartens (intervention group), from Viborg Municipality, and approximately 1000 children attended usual care kindergarten (no-intervention group), from Skive Municipality, both municipalities located in The Central Denmark Region. Further, a subset of approximately 700 children from the intervention group have been measured with height and weight in kindergartens (three- to four-year-olds).