Abstract
We present the Tesco Grocery 1.0 dataset: a record of 420 M food items purchased by 1.6 M fidelity card owners who shopped at the 411 Tesco stores in Greater London over the course of the entire year of 2015, aggregated at the level of census areas to preserve anonymity. For each area, we report the number of transactions and nutritional properties of the typical food item bought including the average caloric intake and the composition of nutrients. The set of global trade international numbers (barcodes) for each food type is also included. To establish data validity we: i) compare food purchase volumes to population from census to assess representativeness, and ii) match nutrient and energy intake to official statistics of food-related illnesses to appraise the extent to which the dataset is ecologically valid. Given its unprecedented scale and geographic granularity, the data can be used to link food purchases to a number of geographically-salient indicators, which enables studies on health outcomes, cultural aspects, and economic factors.
Highlights
Background & SummaryTesco is a British multinational grocery and general merchandise retailer
The purchase record is joined with a product database that is maintained by Tesco and it is populated with the information that the producers of the food items provide
To capture the energy intake, we compute the total calories contained in the typical product: energy(a) = ∑p∈Pakcal(p), Pa where kcal(p) is the value of kilocalories in p
Summary
Background & SummaryTesco is a British multinational grocery and general merchandise retailer. To capture the energy intake, we compute the total calories contained in the typical product (i.e., the average number of calories across all products purchased by area residents): energy(a) = ∑p∈Pakcal(p) , Pa where kcal(p) is the value of kilocalories in p.
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