Table 1.
Characteristics of the participants included in the present analyses: British children (n 1626) aged 9–10 years from the SPEEDY (Sport, Physical activity and Eating behaviour: Environmental Determinants in Young people) study
| All | Girls | Boys | ||||
|---|---|---|---|---|---|---|
| Mean or n | sd or % | Mean or n | sd or % | Mean or n | sd or % | |
| Number of participants | 1626 | 100 | 910 | 56 | 716 | 44 |
| Age (years) | 10·25 | 0·31 | 10·25 | 0·31 | 10·24 | 0·31 |
| BMI (kg/m2)† | 18·21 | 3·12 | 18·51 | 3·28 | 17·83 | 2·84 |
| Highest educational qualification of parent (n, %) | ||||||
| None | 107 | 6·6 | 62 | 6·8 | 45 | 6·3 |
| GCSE or equivalent | 873 | 53·7 | 495 | 54·4 | 378 | 52·8 |
| A-Level or equivalent | 390 | 24·0 | 220 | 24·2 | 170 | 23·7 |
| Degree or higher | 256 | 15·7 | 133 | 14·6 | 123 | 17·2 |
| Usual type of lunch on school day (n, %) | ||||||
| School meal | 399 | 24·5 | 214 | 23·5 | 185 | 25·8 |
| Packed lunch | 1227 | 75·5 | 696 | 76·5 | 531 | 74·2 |
| Under-reporters‡ | 332 | 20·4 | 176 | 19·3 | 156 | 21·8 |
†Difference between girls and boys was statistically significant at P < 0·05.
‡Under-reporting defined as reported energy intake <71 % of estimated energy requirements.