These researchers sought to determine whether the effects of price discounts and tailored nutrition education on supermarket food purchases (percentage energy from saturated fat and healthy foods purchased) vary by ethnicity, household income and education. The study involved 1,104 New Zealand shoppers randomised to receive a 12.5% discount on healthier foods and/or tailored nutrition education (or no intervention) for 6 months. The analyses revealed an association of price discounts with healthy food purchasing (0.79 kg/week increase) that varied by ethnicity (p=0.04): European/other 1.02 kg/week (n=755); Pacific 1.20 kg/week (n=101); Māori −0.15 kg/week (n=248). This association of price discounts with healthy food purchasing did not vary by household income or education.
