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Journal Article

Citation

Pechey R, Couturier DL, Hollands GJ, Mantzari E, Munafò MR, Marteau TM. BMC Public Health 2016; 16(1): e390.

Affiliation

Behaviour and Health Research Unit, University of Cambridge, Cambridge, UK. tm388@cam.ac.uk.

Copyright

(Copyright © 2016, Holtzbrinck Springer Nature Publishing Group - BMC)

DOI

10.1186/s12889-016-3068-z

PMID

27268112

Abstract

BACKGROUND: Wine glass size can influence both perceptions of portion size and the amount poured, but its impact upon purchasing and consumption is unknown. This study aimed to examine the impact of wine glass size on wine sales for on-site consumption, keeping portion size constant.

METHODS: In one establishment (with separate bar and restaurant areas) in Cambridge, England, wine glass size (Standard; Larger; Smaller) was changed over eight fortnightly periods. The bar and restaurant differ in wine sales by the glass vs. by the bottle (93 % vs. 63 % by the glass respectively).

RESULTS: Daily wine volume purchased was 9.4 % (95 % CI: 1.9, 17.5) higher when sold in larger compared to standard-sized glasses. This effect seemed principally driven by sales in the bar area (bar: 14.4 % [3.3, 26.7]; restaurant: 8.2 % [-2.5, 20.1]).

FINDINGS were inconclusive as to whether sales were different with smaller vs. standard-sized glasses.

CONCLUSIONS: The size of glasses in which wine is sold, keeping the portion size constant, can affect consumption, with larger glasses increasing consumption. The hypothesised mechanisms for these differential effects need to be tested in a replication study. If replicated, policy implications could include considering glass size amongst alcohol licensing requirements. TRIAL REGISTRATION: ISRCTN registry: ISRCTN12018175. Registered 12(th) May 2015.


Language: en

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