Beverage purchases from stores in Mexico under the excise tax on sugar sweetened beverages: observational study

STUDY QUESTION: What has been the effect on purchases of beverages from stores in Mexico one year after implementation of the excise tax on sugar sweetened beverages? METHODS: In this observational study the authors used data on the purchase of beverages in Mexico from January 2012 to December 2014 from an unbalanced panel of 6253 households providing 205 112 observations in 53 cities with more than 50 000 inhabitants. To test whether the post-tax trend in purchases was significantly different from the pretax trend, the authors used a difference in difference fixed effects model, which adjusts for both macroeconomic variables that can affect the purchase of beverages over time, and pre-existing trends. The…

• RW
  Robert Wood Johnson Foundation
• BP
  Bloomberg Philanthropies
• IN
  Instituto Nacional De Salud Pública
• CP
  Carolina Population Center, University of North Carolina at Chapel Hill