Table 1.
Description of explanatory variables in the model
| Share_display_label | Share of total volume purchased that consists of products that display the Choices label (av)* |
| Numb_display_label | Number of products that display the Choices label on packaging based on EAN-code level |
| Share_organic | Share of total volume purchased that is organic |
| Share_ownlabel | Share of total volume purchased that is own label |
| Share_super | Share of total volume that is purchased in supermarkets |
| Share_discount | Share of total volume that is purchased in discount stores |
| Share_service | Share of total volume that is purchased in service and other types of store (base)† |
| Rel_price | Relative average price of eligible products over products defined as not eligible (av)* |
| s m | Seasonality |
| (For estimations on months) Month dummies (1 = if purchased in January, etc.) (av)* | |
| (For estimation on quarters) Quarter dummies (1 = if purchased in Q1, etc.) (av)* | |
| y06–y08 | Yearly dummies to account for preference-driven change over time (av)* |
| s h | Household characteristics |
| Hh_size | Number of people in household |
| Female | Gender dummy for person doing most housework and shopping (1 = female, 0 = male) |
| Educ_low | Education dummy (1 = person with highest education is low educated) (base)† |
| Educ_mid | Education dummy (1 = person with highest education is middle educated) |
| Educ_high | Education dummy (1 = person with highest education is high educated) |
| City | District dummy (1 = household living in one of the three big cities) (base)† |
| West | District dummy (1 = household living in the west) |
| South | District dummy (1 = household living in the south) |
| North | District dummy (1 = household living in the north) |
| East | District dummy (1 = household living in the east) |
| Single | Relationship dummy (1 = household consists of one person) |
| Inc_low | Income dummy (1 = net household income per month is <€2100) (base)† |
| Inc_mid | Income dummy (1 = net household income per month is €2100–3500) |
| Inc_high | Income dummy (1 = net household income per month is >€3500) |
| Age_young | Age dummy (1 = main shopper’s age is <35 years) (base)† |
| Age_mid | Age dummy (1 = main shopper’s age is 35–54 years) |
| Age_old | Age dummy (1 = main shopper’s age is ≥55 years) |
*
(av) for average indicates that it is a variable that is common to all households.
†
(base) indicates that this is used as the base level in the estimation.