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Table 4 Intervention effect of the 25% discount on fruits and vegetables on food purchases and expenditures in the Virtual Supermarket

From: The effects of a 25% discount on fruits and vegetables: results of a randomized trial in a three-dimensional web-based supermarket

  B Lower 95% CI Upper 95% CI P value
FRUIT AND VEGETABLES     
Fruit and vegetable expenditures (€) -1.22 -3.04 0.60 0.19
Purchased vegetables (in items) 0.92 -0.36 2.19 0.16
Purchased vegetables (in grams) 504 -64 1,071 0.08
Purchased fruit (items) 0.41 -0.07 0.90 0.09
Purchased fruit (in gram) 481 -69 1,030 0.09
Total purchased fruit & vegetables (items) 1.33 -0.16 2.82 0.08
Total purchased fruit & vegetables (gram) 984 97 1,872 0.03*
OTHER FOOD ITEMS     
Expenditures in Virtual Supermarket (€) 0.97 -6.14 8.07 0.79
Total items purchased (n) 3.58 -2.22 9.38 0.22
Total calories purchased (kcal) 2,327 -3,494 8,147 0.43
Items in other food categories (n) a 2.25 -2.91 7.41 0.39
Expenditures in other food categories (€) a 2.19 -4.12 8.50 0.49
Expenditures on desserts (e.g., pudding, yoghurt, etc.) (€) 0.13 -0.45 0.72 0.65
Expenditures on soda (€) -0.03 -0.73 0.67 0.93
Expenditures on crisps (€) -0.27 -0.66 0.13 0.18
Expenditures on candy (excl. chocolate) (€) 0.07 -0.39 0.53 0.78
Expenditures on chocolate (€) -0.22 -0.61 0.18 0.28
  1. Linear regression model corrected for: sex, education level, ethnicity, responsibility for real groceries, price perception score, index of habit strength, appreciation of the Virtual Supermarket, household size and virtual shopping budget
  2. *Significant at p < .05