Table 1 Characteristics of subjects (n = 2066)
Characteristics | N | % |
|---|---|---|
Gender of study child | ||
Male | 1010 | 48.9 |
Female | 1056 | 51.1 |
Age group of study child | ||
9-13 years | 1046 | 50.6 |
14-16 years | 1020 | 49.4 |
Maternal age (years ± SD) | 42.7 ± 5.6 | |
Maternal age at birth of study child (years ± SD) | 29.8 ± 5.3 | |
Maternal highest primary/secondary education | ||
< Year 10 | 98 | 4.7 |
Year 10 and 11 | 782 | 37.9 |
Year 12 or equivalent | 1186 | 57.4 |
Maternal birth country | ||
Australia/New Zealand | 1645 | 79.6 |
United Kingdom/Ireland | 178 | 8.6 |
Asia and Indian sub-continent | 87 | 4.2 |
All other countries | 156 | 7.6 |
Study child ever been breastfed | 1908 | 92.4 |
Breastfeeding duration | ||
0 months | 173 | 8.4 |
< 2 months | 263 | 12.7 |
2-< 4 months | 204 | 9.9 |
4-< 6 months | 307 | 14.9 |
≥ 6 months | 1119 | 54.2 |
Weight statusa of study child | ||
Underweight | 108 | 5.3 |
Healthy weight | 1438 | 69.6 |
Overweight | 387 | 18.7 |
Obese | 133 | 6.4 |
Averageb duration of moderate-to-vigorous physical activity | ||
< 60 minutes/day | 452 | 21.9 |
≥ 60 minutes/day | 1614 | 78.1 |
Averageb screen-time duration of study child | ||
< 2 hours/day | 350 | 16.9 |
≥ 2 hours/day | 1716 | 83.1 |
Averageb sleep duration of study child | ||
< 8 hours/day | 90 | 4.4 |
8-10 hours/day | 1045 | 50.6 |
> 10 hours/day | 931 | 45.0 |
Averagec daily energy intake (mean MJ/d ± SD) | ||
9-13 yrs, males (n = 493) | 9.39 ± 2.38 | |
9-13 yrs, females (n = 556) | 8.09 ± 2.13 | |
14-16 yrs, males (n = 521) | 11.09 ± 3.27 | |
14-16 yrs, females (n = 503) | 8.20 ± 2.32 | |