All | Boys | Girls | P | |
---|---|---|---|---|
N | 2054 | 1013 | 1041 | |
Physical characteristics | ||||
Age, yr | 14.8 ± 1.3 | 14.8 ± 1.3 | 14.8 ± 1.3 | 0.208 |
Weight, kg | 58.4 ± 11.0 | 62.5 ± 11.9 | 54.3 ± 8.4 | <0.001 |
Height, cm | 166.5 ± 9.2 | 170.5 ± 9.6 | 162.7 ± 6.9 | <0.001 |
Body mass index, kg/m2 | 21.0 ± 2.9 | 21.4 ± 3.2 | 20.5 ± 2.6 | <0.001 |
Body mass index, Z-score | −0.12 ± 1.00 | −0.06 ± 1.00 | −0.18 ± 0.99 | <0.010 |
Infection and allergy frequency | ||||
Infection incidence in the last 3 mo., % | 32 | 28 | 36 | <0.001 |
Allergy incidence in the last 3 mo., % | 36 | 28 | 44 | <0.001 |
Health behaviours | ||||
Overweight + obesity, % | 17.5 | 24.8 | 10.5 | <0.001 |
Physical activity ≥5 d/week, % | 17 | 22 | 12 | <0.001 |
TV viewing <2 hr/d, % | 70 | 71 | 68 | 0.160 |
Sleep duration ≥8 hr/d, % | 67 | 68 | 65 | 0.174 |
Fruit consumption ≥2 servings/d, % | 22 | 20 | 24 | 0.033 |
Use of screen devices at leisure time <60 min/d, % | 79 | 68 | 89 | <0.001 |
Homework ≥60 min/d, % | 64 | 55 | 72 | <0.001 |