The short- and long-term impact of an incentive intervention on healthier eating: a quasi-experiment in primary- and secondary-school cafeterias in Brazil.

ABSTRACT:

Objective

To assess the short- and long-term effectiveness of a lottery incentive intervention to promote the purchase of healthy products in school cafeterias.

Design

A quasi-experiment in which students' purchases in intervention schools were analysed in a pre-post analysis and also compared with a control school in a difference-in-differences model. A hierarchical linear model assessed the mean number of promoted healthy products purchased daily per participant before (twenty-six weekdays), during (nine weekdays) and after (twenty-eight weekdays) the intervention period. Sex, age and prior purchasing behaviour served as covariates.

Setting

Convenience sample of school cafeterias using a debit-card payment method that allowed for the assessment of students' purchasi

SUBMITTER: Ferreira CM 

PROVIDER: S-EPMC10261067 | biostudies-literature | 2019 Jun

REPOSITORIES: biostudies-literature