Baseline demographic and dietary data by intervention group for schools and pupils completing the trial
| Variable | Control (n=539) | 95% CI | Intervention (n=432) | 95% CI |
| Region | ||||
| England | 36 | 37 | ||
| Wales | 3 | 2 | ||
| Scotland | 2 | 0 | ||
| Northern Ireland | 2 | 1 | ||
| School-level variables | ||||
| *Free school meals (%) | 14 | 4 to 20 | 16 | 4 to 21 |
| *Key stage 2 results | 4.1 | 4.0 to 4.3 | 4.1 | 3.9 to 4.3 |
| Individual-level variables | ||||
| Male gender (%) | 54.9 | 49.3 | ||
| Sandwich (g) | 96.6 | 90.9 to 102.4 | 93.6 | 87.4 to 99.8 |
| Other starchy food (g) | 4.9 | 0.7 to 9 | 9.1 | 4.6 to 13.7 |
| Cheese (g) | 7.3 | 5.3 to 9.3 | 5.3 | 3.1 to 7.5 |
| Milk-based desserts (g) | 34.9 | 29.6 to 40.2 | 40.6 | 34.8 to 46.3 |
| Fruit (g) | 67.6 | 57.6 to 77.5 | 72.3 | 61.6 to 83 |
| Vegetables (g) | 5.6 | 3.1 to 8.1 | 7.3 | 4.6 to 10 |
| Unsweetened drinks (g) | 108.3 | 88.5 to 128.1 | 93.3 | 72 to 114.6 |
| Permitted desserts (g) | 6.4 | 4.9 to 7.9 | 6.4 | 4.7 to 8.1 |
| Savoury snacks (g) | 15.8 | 14.2 to 17.4 | 16.9 | 15.1 to 18.7 |
| Confectionery (g) | 23.3 | 20.7 to 25.9 | 22.1 | 19.3 to 24.9 |
| Sweetened drinks (g) | 201.6 | 179.6 to 223.6 | 225.0 | 201.3 to 248.7 |
| Energy (E) (kcal) | 616.8 | 591.9 to 641.7 | 622.1 | 595.5 to 648.7 |
| Protein (g) | 17.7 | 16.7 to 18.8 | 18.1 | 17 to 19.1 |
| Total fat (g) | 21.0 | 19.7 to 22.3 | 20.3 | 18.9 to 21.6 |
| Total fat (% E) | 29.7 | 28.6 to 30.7 | 28.8 | 27.6 to 29.9 |
| Saturated fat (g) | 8.1 | 7.6 to 8.7 | 7.9 | 7.4 to 8.5 |
| Saturated fat (% E) | 11.5 | 11 to 12 | 11.1 | 10.6 to 11.6 |
| Total carbohydrate (g) | 94.3 | 90.4 to 98.2 | 97.2 | 93 to 101.3 |
| Total sugar (g) | 51.0 | 48.1 to 53.9 | 54.8 | 51.6 to 57.9 |
| Non-milk extrinsic sugars (g) | 38.0 | 35.5 to 40.6 | 41.4 | 38.7 to 44.2 |
| Non-milk extrinsic sugars (% E) | 22.9 | 21.5 to 24.2 | 24.9 | 23.4 to 26.3 |
| Fibre (NSP) (g) | 3.6 | 3.4 to 3.7 | 3.9 | 3.7 to 4.2 |
| †Sodium (mg) | 736.6 | 680.8 to 796.9 | 752.2 | 691.5 to 818.2 |
| †Calcium (mg) | 221.0 | 203.3 to 240.1 | 240.1 | 219.6 to 262.5 |
| †Iron (mg) | 2.2 | 2 to 2.3 | 2.3 | 2.1 to 2.5 |
| †Zinc (mg) | 1.8 | 1.7 to 1.9 | 2.0 | 1.8 to 2.1 |
| †Folate (μg) | 45.1 | 41.7 to 48.7 | 50.7 | 46.6 to 55.1 |
| †Vitamin C (mg) | 29.0 | 25.2 to 33.4 | 35.3 | 30.4 to 41.1 |
| †Vitamin A (μg) | 63.6 | 53 to 76.2 | 88.1 | 72.4 to 107.1 |