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Do high vs. low purchasers respond differently to a nonessential energy-dense food tax? Two-year evaluation of Mexico's 8% nonessential food tax

It is unclear whether response to a nonessential food tax varies across time or for high vs. low-consuming households. The objective is to examine whether the effect of Mexico's 2014 8% nonessential energy-dense foods tax increased in the second year post-implementation and whether it different...

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Bibliographic Details
Published in:Preventive medicine 2017-12, Vol.105, p.S37-S42
Main Authors: Taillie, Lindsey Smith, Rivera, Juan A., Popkin, Barry M., Batis, Carolina
Format: Article
Language:English
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Summary:It is unclear whether response to a nonessential food tax varies across time or for high vs. low-consuming households. The objective is to examine whether the effect of Mexico's 2014 8% nonessential energy-dense foods tax increased in the second year post-implementation and whether it differentially affected households by pre-tax purchasing pattern. We used longitudinal data on Mexican household food purchases (n=6089 households) from 2012 to 2015. Households were classified based on median pre-tax purchases: low untaxed/low taxed (“low”), low untaxed/high taxed (“unhealthy”), high untaxed/low taxed (“healthy”), and high untaxed/high taxed (“high”) purchasers. Fixed effects models tested whether observed post-tax purchases differed from the counterfactual, or what would have been expected based on pre-tax trends. Post-tax declines in the % taxed food purchases increased from −4.8% in year one to −7.4% in year two, yielding a 2-year mean decline of 6.0% beyond the counterfactual (p
ISSN:0091-7435
1096-0260
1096-0260
DOI:10.1016/j.ypmed.2017.07.009