Objective To assess the immediate impact of the introduction of minimum unit pricing in Scotland on household alcohol purchases.
Design Controlled interrupted time series analysis.
Setting Purchase data from Kantar Worldpanel’s household shopping panel for 2015-18.
Participants 5325 Scottish households, 54 807 English households as controls, and 10 040 households in northern England to control for potential cross border effects.
Interventions Introduction of a minimum price of 50p (€0.55; $0.61) per UK unit (6.25p per gram) for the sale of alcohol in Scotland on 1 May 2018.
Main outcome measures Price per gram of alcohol, number of grams of alcohol purchased from off-trade by households, and weekly household expenditure on alcohol.
Results The introduction of minimum unit pricing in Scotland was associated with an increase in purchase price of 0.64p per gram of alcohol (95% confidence interval 0.54 to 0.75), a reduction in weekly purchases of 9.5 g of alcohol per adult per household (5.1 to 13.9), and a non-significant increase in weekly expenditure on alcohol per household of 61p (−5 to 127). The increase in purchase price was higher in lower income households and in households that purchased the largest amount of alcohol. The reduction in purchased grams of alcohol was greater in lower income households and only occurred in the top fifth of households by income that purchased the greatest amount of alcohol, where the reduction was 15 g of alcohol per week (6 to 24). Changes in weekly expenditure were not systematically related to household income but increased with increasing household purchases.
Conclusions In terms of immediate impact, the introduction of minimum unit pricing appears to have been successful in reducing the amount of alcohol purchased by households in Scotland. The action was targeted, in that reductions of purchased alcohol only occurred in the households that bought the most alcohol.

目的评估苏格兰实行最低单位价格对家庭酒精购买的直接影响。
设计控制的中断时间序列分析。
设置从坎塔Worldpanel的的家庭购物购买面板数据2015-18。
参与者有5325户苏格兰家庭，54 807户英国家庭作为控制对象，以及英格兰北部的10040户家庭来控制潜在的跨境影响。
干预措施：自2018年5月1日起，在苏格兰出售酒精的最低价格为每英国单位50p（0.55欧元； 0.61美元）（每克6.25p）。
每克酒精的价格，家庭从非贸易方式购买的酒精克数，以及家庭每周的酒精支出。
结果苏格兰引入最低单位价格后，每克酒精的购买价格提高了0.64便士（95％的置信区间为0.54至0.75），每户每个成年人每周购买的酒精量为9.5克（5.1降为13.9），并且每户每周的酒精支出没有明显增加，为61便士（-5到127）。在低收入家庭和购买最多酒精的家庭中，购买价格的上涨幅度更大。在收入较低的家庭中，购买的酒精克数减少幅度更大，仅出现在按收入购买最大数量的酒精的家庭中，收入最高的五分之一家庭，即每周减少15克酒精（6至24）。
结论就即时影响而言，引入最低单价似乎已成功地减少了苏格兰家庭购买的酒量。该行动是针对性的，因为减少购买的酒精仅发生在购买最多酒精的家庭中。