Table 1 Sample characteristic across sleep duration groups among children aged 5-15 years in South Australia (SA), January 2004 to December 2008
From: Short sleep duration and obesity among Australian children
≥10 hours (n = 1812) | 9-10 hours (n = 848) | <9 hours (n = 835) | P | |
|---|---|---|---|---|
Age (SD) | 9.2(2.9) | 12.0(2.7) | 12.7(2.6) | <0.001 |
Boys (%) | 50.7 | 51.5 | 48.1 | 0.621 |
Obesity (%) | 8.9 | 5.2 | 7.8 | 0.004 |
Age 5-10 years (n = 1574) | 11.5 | 12.9 | 22.3 | 0.032 |
Age 11-12 years (n = 631) | 3.3 | 3.6 | 10.3 | 0.067 |
Age 13-15 years (n = 1290) | 4.1 | 2.2 | 3.2 | 0.606 |
BMI (mean, SE) | 18.0(0.14) | 19.5(0.20) | 20.4(0.27) | <0.001 |
Household income (%) | ||||
>20000$ | 87.0 | 86.3 | 82.5 | |
up to 20000$ | 5.6 | 7.2 | 8.6 | 0.013 |
not stated | 7.3 | 6.5 | 8.9 | |
Area of residence (%) | ||||
Metro Adelaide | 67.6 | 70.4 | 75.7 | <0.001 |
SA country | 32.4 | 29.6 | 24.3 | |
Intake of vegetable (servings/day) (mean, SE) | 2.2(0.04) | 2.4(0.07) | 2.3(0.07) | 0.113 |
Intake of fruit (servings/day) (mean, SE) | 1.8(0.03) | 1.7(0.06) | 1.6(0.05) | 0.001 |
Hours on sport per day(mean, SE) | 0.4(0.02) | 0.6(0.03) | 0.7(0.06) | <0.001 |
Hours on reading for pleasure per day(mean, SE) | 0.5(0.02) | 0.6(0.03) | 0.7(0.05) | 0.001 |
Hours on studying/home work at home per day(mean, SE) | 0.5(0.03) | 0.7(0.04) | 0.9(0.04) | <0.001 |
Hours on TV, video, computer games(mean, SE) | 1.7(0.04) | 1.9(0.06) | 2.1(0.08) | <0.001 |