| Duration of activity | Underweight (n = 53) N (%) | Normal (n = 912) N (%) | Overweight (n = 172) N (%) | Obese (n = 61) N (%) | χ2 | P value |
| Duration of involvement in sedentary activities in hours/day | ||||||
| None | 11 (9.5) | 90 (77.6) | 12 (10.3) | 3 (2.6) |
|
|
| ≤1 | 17 (10.7) | 122 (76.8) | 15 (9.4) | 5 (3.1) | 53.71 | <0.001 |
| >1 - 2 | 12 (6.1) | 153 (78.1) | 24 (12.2) | 7 (3.6) | df = 8 |
|
| >2 - 3 | 9 (4.3) | 160 (77.3) | 29 (14.1) | 9 (4.3) |
|
|
| >3 | 4 (0.8) | 387(74.4) | 92 (17.7) | 37 (7.1) |
|
|
| Participation in school based sports/week | ||||||
| None | 32 (6.6) | 345 (71.1) | 77 (15.9) | 31 (6.4) |
|
|
| ≤1 | 6 (2.7) | 173 (77.6) | 32 (14.3) | 12 (5.4) | 18.84 | 0.03 |
| 2 | 7 (4.3) | 131 (79.9) | 18 (11.0) | 8 (4.9) | df = 9 |
|
| 3+ | 8 (2.5) | 263 (80.7) | 45 (13.8) | 10 (3.1) |
|
|