Parent and child perceptions of school-based obesity prevention in England: a qualitative study.

Background: Schools are key settings for childhood obesity prevention, and the location for many intervention studies. This qualitative study aims to explore parent and child experiences of the WAVES study obesity prevention intervention, in order to gain understanding of the mechanisms by which the intervention results in behaviour change, and provide context to support interpretation of the main trial results.

Methods: Focus groups were held with 30 parents and 62 children (aged 6-7 years) from primary schools in the West Midlands, UK.

A Brief Educational Intervention Increases Knowledge of the Sugar Content of Foods and Drinks but Does Not Decrease Intakes in Scottish Children Aged 10-12 Years.

Objective: To assess the effectiveness of an educational intervention to improve children's knowledge of the sugar content of food and beverages.

Methods: Cluster-randomized, controlled trial with 268 children (aged 10-12 years) from 14 primary schools in Aberdeen, Scotland. The intervention group received 2 interactive classroom sessions about sugar.

Process evaluation design in a cluster randomised controlled childhood obesity prevention trial: the WAVES study.

Background: The implementation of a complex intervention is heavily influenced by individual context. Variation in implementation and tailoring of the intervention to the particular context will occur, even in a trial setting. It is recognised that in trials, evaluating the process of implementation of a complex intervention is important, yet process evaluation methods are rarely reported.