Table 1.
Characteristics of participants
| Boys n (%) | Girls n (%) | p | ||
|---|---|---|---|---|
| Age (years) | 8 | 40 (49.4 %) | 46 (56.1 %) | |
| 9 | 30 (37.0 %) | 24 (29.3 %) | ||
| 10 | 11 (14.8 %) | 12 (14.6 %) | 0.570 | |
| School grade | 3rd grade | 47 (68.1 %) | 50 (72.5 %) | |
| 4th grade | 22 (31.9 %) | 19 (27.5 %) | 0.355 | |
| BMI categories | Underweight | 2 (2.5 %) | 4 (4.9 %) | |
| Normal weight | 46 (56.8 %) | 46 (56.1 %) | ||
| Overweight | 10 (12.3 %) | 18 (22.0 %) | ||
| Obese | 23 (28.4 %) | 14 (17.1 %) | 0.162 | |
| Sports activities (times/week) | <2/week | 31 (45.6 %) | 44 (61.1 %) | |
| 2–3/week | 29 (42.6 %) | 24 (33.3 %) | ||
| > 4/week | 8 (11.8 %) | 4 (5.6 %) | 0.047* | |
| Sleeping (hours/day) | ≤8 h/day | 23 (33.3 %) | 16 (22.9 %) | |
| 9 h/day | 26 (37.7 %) | 29 (41.4 %) | ||
| ≥10 h/day | 20 (29.0 %) | 25 (35.7 %) | 0.374 | |
| Television/video viewing | <2 h/day | 62 (91.2 %) | 60 (93.8 %) | |
| ≥2 h/day | 6 (8.6 %) | 4 (6.3 %) | 0.411 | |
| Father’s education | 0–9 years | 34 (57.6 %) | 28 (45.2 %) | |
| 10–12 years | 12 (20.3 %) | 22 (35.5 %) | ||
| >12 years | 13 (22.0 %) | 12 (19.4 %) | 0.175 | |
| Mother’s education | 0–9 years | 35 (53.9 %) | 29 (45.3 %) | |
| 10–12 years | 14 (21.5 %) | 16 (25.0 %) | ||
| >12 years | 16 (24.6 %) | 19 (29.7 %) | 0.623 | |
*Calculated for categories <2/week and ≥2/week