Comparing tailored implementation strategies to improve intervention fidelity in a school-based obesity prevention program: the IMPROVE hybrid type III trial.

ABSTRACT:

Background

In Sweden, childhood overweight and obesity rates have risen significantly over the last decades, necessitating scalable interventions. The evidence-based Healthy School Start (HSS) program integrates school and family components to promote healthy habits and prevent overweight and obesity among children. The IMPROVE trial aimed to compare the effect of two tailored implementation strategy bundles (Basic and Enhanced) on fidelity to the HSS program.

Methods

A hybrid type III cluster-randomized trial with two parallel arms was conducted in 45 schools (cluster) in three municipalities in Stockholm Sweden from August 2021 to June 2024. The program was implemented in two consecutive cohorts over two academic school years. Fidelity was measured with an adherence score

SUBMITTER: Annerstedt KS 

PROVIDER: S-EPMC12924443 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature