Table 1 Descriptive data for the sample
Characteristic | N* | Mean(SD) | %(n) |
|---|---|---|---|
Individual level | |||
 Age (yr) | 7345 | 13.7 (1.4)^ |  |
 Female | 7350 |  | 49.1 (3607) |
 White | 7342 |  | 92.7 (6808) |
 Overweight or obese | 2899 |  | 18.2 (527) |
 Physically active (days/week) | 7279 | 4.0 (2.0) |  |
 MVPA (hrs/week) | 6943 | 2.6 (2.3) |  |
 Actively travelling to school | 7123 |  | 29.0 (2135) |
 Actively travelling from school | 7059 |  | 36.3 (2560) |
 Screen-based behaviour > 2 hours per weekday | 7376 |  | 84.9 (6259) |
 Typical alcohol consumption ≥ 3 drinks | 7292 |  | 15.2 (1110) |
 Smoke at least once a week | 7358 |  | 3.2 (237) |
 Family Affluence Score | 7200 | 15.0 (2.3) |  |
School level | |||
 Free School Meal eligibility | 7376 | 15.9 (8.7) |  |
 Lunch break duration ≥ 50 minutes | 7267 |  | 58.5 (4254) |
 Existing food and fitness policy | 7302 |  | 73.0 (5329) |
 Extra-curricular sports activities delivered by PE staff | 7376 |  | 97.8 (7210) |
PE curriculum time allocated each week ≥ 60 minutes | 7250 |  | 94.6 (6855) |
 Number of sports facilities available after school | 7376 | 5.5 (2.2) |  |
 Number of sports facilities available during lunch | 7376 | 5.2 (2.3) |  |