Table 1.
Baseline characteristics and observed change in exposures and outcomes in the analytical sample (Mean values and standard deviations)
| Boys (n 175) | Girls (n 192) | |||
|---|---|---|---|---|
| Mean/% | sd/n | Mean/% | sd/n | |
| Demographic data | ||||
| Age (years) | 9·7 | 0·5 | 9·8 | 0·4 |
| Maternal BMI (kg/m2) | 24·8 | 4·9 | 25·0 | 4·7 |
| Sleep time (h) | 10·4 | 0·9 | 10·7 | 0·7 |
| Age the care giver left full-time education (%) | ||||
| ≤16 years | 33·7 | 59 | 43·8 | 84 |
| 16–18 years | 38·9 | 68 | 34·4 | 66 |
| >18 years | 22·9 | 40 | 20·3 | 39 |
| Anthropometry | ||||
| Waist (cm) | ||||
| Baseline | 64·3 | 7·6 | 62·9 | 7·8 |
| 4-year change | 8·2 | 5·2 | 8·8 | 5·6 |
| FMI (kg/m2) | ||||
| Baseline | 7·9 | 3·8 | 9·4 | 4·9 |
| 4-year change | 4·4 | 4·2 | 7·8 | 4·5 |
| %body fat | ||||
| Baseline | 21·0 | 5·6 | 24·9 | 6·1 |
| 4-year change | −0·5 | 3·9 | 4·5 | 4·1 |
| %overweight/obese (baseline) | 18·5 | 32 | 23·4 | 45 |
| Diet diary-derived data | ||||
| DED (kJ/g) | ||||
| Baseline | 7·6 | 1·3 | 7·9 | 1·3 |
| 4-year change | 0·6 | 1·5 | 0·3 | 1·6 |
| Accelerometer-derived data | ||||
| SED (min) | ||||
| Baseline | 453·4 | 51·3 | 468·0 | 52·8 |
| 4-year change | 48·0 | 72·6 | 41·1 | 65·8 |
| MPA (min) | ||||
| Baseline | 53·6 | 13·9 | 45·2 | 11·8 |
| 4-year change | −9·9 | 17·8 | −1·6 | 16·6 |
| VPA (min) | ||||
| Baseline | 30·9 | 15·6 | 22·0 | 11·1 |
| 4-year change | −7·4 | 17·0 | −6·4 | 15·4 |
| Wear time (min) | ||||
| Baseline | 722·8 | 55·5 | 715·7 | 61·2 |
| 4-year follow-up | 716·0 | 70·8 | 703·8 | 61·2 |
FMI, fat mass index; DED, dietary energy density; SED, sedentary physical activity; MPA, moderate physical activity; VPA, vigorous physical activity.