Table 1.

Variables measured in the consumer nutrition environment tool

	Variable	Definition	Measurement scale
I	Variety	The number of different choices within a product range based on: product flavour, product size, fair trade/ organic range or no-name/low-cost range	Not available, 1, 2, 3, 4, 5+
II	Price	Price of the cheapest item, £ per portion, for each product	Pound sterling per portion
III	Promotions	Whether or not the product category was on price promotion	Yes/ no
IV	Shelf placement	Where on the shelf the cheapest item for each product was placed	Bottom shelf, other, prominent (eye-level)
V	Store placement	Which part of the store the cheapest item for each product was placed	Inconspicuous, noticeable, prominent
VI	Quality	Level of quality of the two fruit and four vegetables	Poor, medium, good [18]
VII	Healthier alternative	Whether or not a healthier option was available for less healthy products	Yes/ no
VIII	Nutrition information	The type of nutrition information available on the cheapest item for each product	None, othera, back-of-pack, front & back of pack
IX	Single fruit sale	Whether or not single sale of the two fruit measured was possible	Yes/ no

^a For example recipe card.