Nakamura Ryota, Suhrcke Marc, Pechey Rachel, Morciano Marcello, Roland Martin, Marteau Theresa M
Behaviour and Health Research Unit, Institute of Public Health, University of Cambridge, Cambridge, UK; Health Economics Group, Norwich Medical School, University of East Anglia, Norwich, UK; School of Economics, University of East Anglia, Norwich, UK.
Addiction. 2014 Apr;109(4):558-67. doi: 10.1111/add.12419. Epub 2014 Jan 12.
To evaluate the impact of the 2011 Scottish ban on multi-buy promotions of alcohol in retail stores.
Difference-in-differences analysis was used to estimate the impact of the ban on the volume of alcohol purchased by Scottish households, compared with those in England and Wales, between January 2010 and June 2012.
A total of 22 356 households in Scotland, England and Wales.
Records of alcohol purchasing from each of four categories (beer and cider, wine, spirits and flavoured alcoholic beverages), as well as total volume of pure alcohol purchased.
Controlling for general time trends and household heterogeneity, there was no significant effect of the multi-buy ban in Scotland on volume of alcohol purchased either for the whole population or for individual socio-economic groups. There was also no significant effect on those who were large pre-ban purchasers of alcohol. Most multi-buys were for beer and cider or for wine. The frequency of shopping trips involving beer and cider purchases increased by 9.2% following the ban (P < 0.01), while the number of products purchased on each trip decreased by 8.1% (P < 0.01). For wine, however, these effects were not significant.
Banning multi-buy promotions for alcohol in Scotland did not reduce alcohol purchasing in the short term. Wider regulation of price promotion and price may be needed to achieve this.
评估2011年苏格兰禁止零售商店进行酒类多买促销活动的影响。
采用差异中的差异分析方法，估计2010年1月至2012年6月期间，该禁令对苏格兰家庭与英格兰和威尔士家庭酒类购买量的影响。
苏格兰、英格兰和威尔士的22356户家庭。
四类酒（啤酒和苹果酒、葡萄酒、烈酒和调味酒精饮料）各自的购买记录，以及纯酒精的总购买量。
在控制总体时间趋势和家庭异质性的情况下，苏格兰的多买禁令对全体人口或各个社会经济群体的酒类购买量均无显著影响。对禁令实施前大量购买酒类的人群也没有显著影响。大多数多买促销针对的是啤酒和苹果酒或葡萄酒。禁令实施后，购买啤酒和苹果酒的购物出行频率增加了9.2%（P<0.01），而每次出行购买的产品数量减少了8.1%（P<0.01）。然而，对于葡萄酒来说，这些影响并不显著。
在苏格兰禁止酒类多买促销活动在短期内并未减少酒类购买量。可能需要对价格促销和价格进行更广泛的监管才能实现这一目标。
