Evaluating sugar-sweetened beverage tax effects: online price and sales data from grocers in Canada.

ABSTRACT: Newfoundland and Labrador (NL) introduced Canada's first sugar-sweetened beverage (SSB) tax in September 2022. Compared with national averages, NL has higher intakes of SSBs, lower intakes of plain water and milk, with higher rates of overweight and obesity and diabetes. Taxing SSBs is a recommended intervention but real-world effectiveness of SSB taxes requires more investigation. We evaluated changes in weekly beverage prices and sales pre- and post-tax implementation, comparing NL (intervention) to non-tax regions in Canada (control). We used a controlled interrupted time series to evaluate prices from grocery store websites 3 months pre- and post-tax. We observed no differences-in-differences in the intercept [β = -0.024, 95% confidence interval (CI) -0.15-0.10, P = .70] or slope (β =

SUBMITTER: Prowse R 

PROVIDER: S-EPMC12669988 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature