Skip to main content

Table 2 Comparison of the secondary outcomes between trial groups

From: Prominent positioning and food swaps are effective interventions to reduce the saturated fat content of the shopping basket in an experimental online supermarket: a randomized controlled trial

 

Control

Swaps

Altering order

Combined

Swaps vs Control

Altering order vs Control

Combined vs Control

Altering order vs Swaps

Combined vs Swaps

Combined vs Altering order

(n = 275)

(n = 279)

(n = 261)

(n = 273)

% of products with < 1.5% SFA

20.4 ± 12.6

24.38 ± 13.45

30.87 ± 15.93

32.4 ± 16.15

3.98 (0.79 to 7.17)

10.47 (7.22 to 13.71)

12 (8.8 to 15.21)

6.48 (3.25 to 9.72)

8.02 (4.82 to 11.22)

1.54 (−1.71 to 4.79)

Cost, £/100 g

0.36 ± 0.12

0.37 ± 0.11

0.36 ± 0.1

0.36 ± 0.12

0.01 (− 0.01 to 0.04)

0 (−0.03 to 0.02)

0.01 (− 0.02 to 0.03)

− 0.01 (− 0.04 to 0.01)

−0.01 (− 0.03 to 0.02)

0.01 (− 0.02 to 0.03)

Total energy, kcal

14,467 ± 7038

14,393 ± 7923

12,448 ± 5894

12,670 ± 7574

−74 (− 1641 to 1493)

−2019 (− 3612 to − 425)

− 1797 (− 3372 to − 221)

− 1945 (− 3532 to − 357)

− 1723 (− 3292 to − 153)

222 (− 1374 to 1818)

Energy density, kcal/100 g

219.03 ± 47.52

211.12 ± 46.16

194.73 ± 45.96

190.76 ± 44.36

−7.91 (− 17.97 to 2.16)

−24.3 (− 34.53 to − 14.07)

−28.27 (− 38.38 to − 18.15)

−16.39 (− 26.59 to − 6.2)

− 20.36 (− 30.44 to − 10.28)

−3.97 (− 14.22 to 6.28)

Sugar, % energy

15.42 ± 4.99

15.39 ± 4.93

17.65 ± 6.48

17.82 ± 5.84

− 0.03 (− 1.25 to 1.19)

2.23 (0.99 to 3.47)

2.39 (1.17 to 3.62)

2.27 (1.03 to 3.5)

2.43 (1.21 to 3.65)

0.16 (− 1.08 to 1.41)

Salt, g/100 g

0.15 ± 0.13

0.15 ± 0.08

0.15 ± 0.07

0.14 ± 0.06

0 (− 0.02 to 0.02)

0 (− 0.02 to 0.02)

− 0.01 (− 0.03 to 0.01)

0 (− 0.02 to 0.02)

− 0.01

(− 0.03 to 0.01)

−0.01 (− 0.03 to 0.01)

  1. Values are means ± SDs in the first four columns and mean differences (95% CIs) in the next six columns. SFA Saturated fat