Variable

Pre-Program;

mean (SD)

Post-Program; mean (SD)

Within group change;

mean difference (95% CI)

Between group change;

mean difference (95% CI)

Behaviours

Sharing health information with others¹

Control

2.1 (0.7)

2.3 (0.6)

0.2 (−0.16 to 0.59); P = 0.259

Intervention

2.3 (0.9)

2.1 (0.8)

−0.1 (−0.28 to 0.05); P = 0.179

−0.2 (−0.64 to 0.27); P = 0.431

Breakfast (days/week)

Control

4.7 (2.5)

3.4 (2.4)

−1.1 (−2.14 to −0.01); P = 0.047^*

Intervention

4.5 (2.9)

5.3 (2.4)

0.7 (0.27 to 1.14); P = 0.002^**

1.5 (0.05 to 2.98); P = 0.042^*

Take-away food (days/week)

Control

0.8 (0.8)

0.8 (0.8)

0.1 (−0.62 to 0.81); P = 0.791

Intervention

1.4 (1.3)

1.6 (1.6)

0.2 (−0.18 to 0.49); P = 0.365

0.68 (−0.13 to 1.49); P = 0.098

Soft-drink (days/week)

Control

1.7 (1.8)

1.5 (1.5)

0.20 (−0.68 to 1.07); P = 0.657

Intervention

2.6 (2.3)

2.6 (2.2)

−0.04 (−0.50 to 0.42); P = 0.862

0.78 (−0.40 to 1.96); P = 0.197

Fruit intake (serves/day)

Control

2.2 (1.3)

2.3 (1.4)

0.23 (−0.47 to 0.93); P = 0.521

Intervention

2.4 (1.5)

2.9 (1.4)

0.45 (0.15 to 0.76); P = 0.004^**

0.49 (−0.29 to 1.27); P = 0.220

Vegetable intake (serves/day)

Control

2.6 (1.6)

3.3 (1.3)

0.59 (−0.14 to 1.32); P = 0.116

Intervention

2.7 (1.6)

3.8 (1.3)

1.09 (0.73 to 1.45); P ≤ 0.001^**

0.63 (−0.18 to 1.45); P = 0.127

Physical activity (days/week)

Control

3.9 (1.9)

3.8 (1.6)

0.002 (−0.87 to 0.87); P = 0.997

Intervention

3.3 (2.1)

4.2 (2.0)

0.77 (0.38 to 1.16); P ≤ 0.001^**

0.32 (−0.82 to 1.46); P=0.577

Active mode of transport to school %

Control

12.5

28.6

OR = 16.65 (0.40 to 697.47); P = 0.140

Intervention

34.9

42.6

OR = 1.28 (0.39 to 4.22); P = 0.681

OR = 7.03 (0.20 to 253.70); P = 0.286

Very active at school %

Control

31.2

14.3

OR = 0.08 (0.004 to 1.70); P = 0.106

Intervention

39.1

50.0

OR = 1.97 (0.68 to 5.71); P = 0.214

OR = 73.35 (2.01 to 2673.10); P = 1.019

Very active on weekends %

Control

20.0

26.7

OR = 1.59 (0.21 to 11.91); P = 0.651

Intervention

45.3

52.7

OR = 1.68 (0.72 to 3.92); P = 0.229

OR = 4.48 (0.78 to 25.57); P = 0.092