Table 3 Number of packs of GFSF bought in a typical month and its estimated cost (£) by self-reported prescription status (irrespective of the local area prescribing policy)

Bread (480 g)

527

2.11 ± 2.43

6.99 ± 8.06

1041

3.97 ± 3.13

13.19 ± 10.38

1.87 (1.56 to 2.17)

6.20 (5.19 to 7.21)

< 0.001

Bread roll (175 g)

530

1.03 ± 1.82

1.75 ± 3.10

1042

1.41 ± 2.13

2.40 ± 3.62

0.38 (0.17 to 0.57)

0.65 (0.29 to 1.01)

< 0.001

Flour (500 g)

530

0.47 ± 0.78

0.45 ± 0.76

1042

0.77 ± 0.911

0.75 ± 0.88

0.30 (0.21 to 0.39)

0.29 (0.21 to 0.38)

< 0.001

Bread or flour mixes (500 g)

530

0.18 ± 0.65

0.17 ± 0.63

1042

0.32 ± 1.83

0.31 ± 1.77

0.15 (-0.02 to 0.31)

0.14 (-0.01 to 0.30)

0.075

Crackers or crispbreads (200 g)

530

1.05 ± 1.46

3.62 ± 5.03

1042

1.48 ± 1.77

5.13 ± 6.14

0.44 (0.26 to 0.61)

1.50 (0.90 to 2.11)

< 0.001

Breakfast cereal (300 g)

529

1.69 ± 1.71

4.65 ± 4.70

1041

1.98 ± 1.94

5.45 ± 5.33

0.29 (0.09 to 0.48)

0.79 (0.26 to 1.33)

0.004

Pasta (250 g)

530

0.88 ± 1.44

0.98 ± 1.60

1042

1.40 ± 1.49

1.56 ± 1.66

0.52 (0.37 to 0.68)

0.58 (0.41 to 0.75)

< 0.001

Pizza bases (200 g)

530

0.28 ± 0.70

0.93 ± 2.31

1041

0.43 ± 1.22

1.43 ± 4.04

0.15 (0.04 to 0.26)

0.49 (0.12 to 0.86)

0.009

Biscuits (150 g)

530

2.44 ± 2.63

5.14 ± 5.54

1042

2.45 ± 2.64

5.16 ± 5.56

0.01 (-0.27 to 0.29)

0.02 (-0.56 to 0.60)

0.938

Cakes (200 g)

530

1.28 ± 1.83

2.29 ± 3.27

1039

1.25 ± 1.76

2.24 ± 3.15

-0.03 (-0.21 to 0.16)

-0.05 (-0.38 to 0.29)

0.784

Oats (500 g)

530

0.54 ± 0.95

1.99 ± 3.52

1041

0.86 ± 1.30

3.19 ± 4.81

0.33 (0.2 to 0.45)

1.20 (0.74 to 1.67)

< 0.001

Estimated amount spent on GFSF in a typical month

526

-

28.99 ± 17.88

1035

40.87 ± 21.85

-

11.89 (9.73 to 14.05)

< 0.001