Table 1 Mean differences in nutritional content of the shopping carts between the reference situation (no label) and the labelled situation (one of five FoPL or no label)

−6.36^a,c

−4.77^a,b

−2.99^b,c

−9.04^a

−2.39^b,c

−0.7^b

−17.59^b

− 14.63^b,c

−9.1^c

−21.38^b

− 9.59^c

0.75^a

−24.01^b,c

−19.83^c,d

− 14.17^d

−29.89^b

−11.1^d

1.63^a

−5.39^b,c

−7.1^b

−3.41^a,b

−4.1^b,c

1.29^a,c

3.29^a

0.86^b,c

10.77^a

2.41^b,d

7.21^a,c,d

9.71^a

−0.99^b

−4.08^b

6.19^a,b

10.14^a,c

12.36^a

−0.01^b,c

3.67^a,b

−0.87^a

2.81^a

4.89^a

5.38^a

1.7^a

3.54^a

−9.09^a,b

−6.4^a,b

−5.31^a,b

−13.42^a

−6.99^a,b

−2.32^b

− 22.7^a

− 23.66^a

− 20.37^a

− 27,00^a

−24.31^a

− 6.77^b

− 31.68^b,c

− 30.69^b,c

− 28.4^b,c

− 41.19^b

− 21.83^a,c

−7.97^a

− 6.86^a,b

− 11.54^b

−10.19^a,b

−6.88^a,b

− 3.45^a,b

2.02^a

3.36^b

17.36^a

4.23^a,b

11.21^a,b

9.16^a,b

2.36^b

−5.87^b

22.1^a

4.27^a,b

11.93^a,b

−1.52^b

9.99^a,b

1.12^a

7.00^a

15.19^a

10.98^a

3.55^a

10.18^a

−2.82^a,b

−1.04^a,b

0.64^a,b

−7.16^a

2.24^a,b

7.19^b

−13.12^b

−0.33^b

2.58^a,b

−10.75^b

2.79^b

18.77^a

−14.78^a

−2.1^a

−4.75^a

−12.98^a

2.98^a

26.15^b

−2.45^b

−1.02^b

5.22^a,b

−2.32^b

5.34^a,b

14.73^a

−5.49^a

−1.11^a

0.64^a

−4.83^a

6.44^a

−3.78^a

−15.25^a

−9.85^a

5.3^a

0.14^a

− 3.34^a

1.30^a

−6.05^a

−0.7^a

−5.41^a

−3.14^a

−6.24^a

3.80^a