Table 1 The sample characteristics
Characteristic [n (%)] | Boy (n = 3 360) | Girl (n = 2 964) |
|---|---|---|
Age | ||
15 | 1 853 (55%) | 1 824 (62%) |
16 | 1 507 (45%) | 1 140 (38%) |
Cardiorespiratory fitness | ||
Fit | 1 479 (44%) | 1 176 (40%) |
unFit | 1 881 (56%) | 1 788 (60%) |
BMI | ||
Normal | 2 517 (75%) | 2 367 (80%) |
Obesity | 327 (9.7%) | 150 (5.1%) |
Overweight | 516 (15%) | 447 (15%) |
Status (CRF_BMI) | ||
Fit_Normal | 1 304 (39%) | 1 062 (36%) |
Fit_Obesity | 24 (0.7%) | 13 (0.4%) |
Fit_Overweight | 151 (4.5%) | 101 (3.4%) |
unFit_Normal | 1 213 (36%) | 1 305 (44%) |
unFit_Obesity | 303 (9.0%) | 137 (4.6%) |
unFit_Overweight | 365 (11%) | 346 (12%) |
Academic achievement in mathematics | ||
Level 0: [0,20] | 173 (5.1%) | 220 (7.4%) |
Level 1: (20,40] | 664 (20%) | 663 (22%) |
Level 2: (40,60] | 979 (29%) | 789 (27%) |
Level 3: (60,80] | 849 (25%) | 803 (27%) |
Level 4: (80,100] | 695 (21%) | 489 (16%) |
Academic achievement in mother language | ||
Level 0: [0,20] | 141 (4.2%) | 97 (3.3%) |
Level 1: (20,40] | 696 (21%) | 370 (12%) |
Level 2: (40,60] | 1 052 (31%) | 849 (29%) |
Level 3: (60,80] | 983 (29%) | 1 022 (34%) |
Level 4: (80,100] | 488 (15%) | 626 (21%) |