Table 1.

Survey instruments

Instrument	Main topics covered	Time in field
Long survey, version 1	∙Perceived usefulness of course ∙Confidence to buy healthy foods on a budget ∙Food budgeting – proportions of budget ∙Food label reading ∙Diet–disease link ∙Healthy eating pyramid ∙F&V and fast-food consumption ∙Demographics	Year 1
Long survey, version 2	∙Perceived usefulness of course ∙Confidence to buy healthy foods on a budget ∙Food budgeting – price per kilo method ∙Healthy eating pyramid ∙Food hygiene ∙F&V and fast-food consumption ∙Demographics	Year 2
Short survey, version 1	∙Perceived usefulness of course ∙Food budgeting ∙Demographics	Years 1 and 2
Short survey, version 2	∙Perceived usefulness of course ∙Food label reading ∙Demographics	Years 1 and 2
Short survey, version 3	∙Perceived usefulness of course ∙Diet–disease link ∙Demographics	Years 1 and 2
Short survey, version 4	∙Perceived usefulness of course ∙Healthy eating pyramid ∙Confidence to buy healthy foods on a budget ∙Demographics	Years 1 and 2
Online survey	∙Perceived usefulness of course ∙Consumption of a range of foods including fruits, vegetables, fast food, cereals, legumes, sodas, cookies/cakes and low-salt options ∙Shopping behaviours such as reading food labels and using the price per kilo method ∙Demographics	Years 1 and 2

F&V, fruit and vegetables.