Characteristic | Underweight | Healthy weight | Obese | χ2 |
---|---|---|---|---|
n (%) | n (%) | n (%) | ||
Gender | 2282.057*** | |||
 Male | 19,356 (62.4) | 21,016 (47.6) | 22,334 (46.1) |  |
 Female | 11,682 (37.6) | 23,172 (52.4) | 26,162 (53.9) |  |
Age | 406.171*** | |||
 12 | 2594 (8.4) | 3840 (8.7) | 3540 (7.3) |  |
 13 | 5426 (17.5) | 7750 (17.5) | 7384 (15.2) | |
 14 | 5450 (17.6) | 7562 (17.1) | 7560 (15.6) | |
 15 | 5260 (16.9) | 7190 (16.3) | 8220 (16.9) | |
 16 | 5196 (16.7) | 7474 (16.3) | 8744 (18.0) | |
 17 | 5042 (16.2) | 7472 (16.9) | 9234 (19.0) | |
 18 | 2070 (6.7) | 2900 (6.6) | 3814 (7.9) |  |
Economic status | 867.715*** | |||
 Lowest | 688 (2.2) | 802 (1.8) | 1532 (3.2) | |
 Lower-middle | 3534 (11.4) | 4168 (9.4) | 6802 (14.0) | |
 Middle | 13,774 (44.4) | 20,900 (47.3) | 22,314 (46.0) | |
 Upper-middle | 9524 (30.7) | 13,134 (29.7) | 13,420 (27.7) | |
 Highest | 3518 (11.3) | 5184 (11.7) | 4428 (9.1) | |
Academic achievement | 869.500*** | |||
 Lowest | 2970 (9.6) | 3604 (8.2) | 5508 (11.4) | |
 Lower-middle | 6468 (20.8) | 9138 (20.7) | 11,952 (24.6) | |
 Middle | 8372 (27.0) | 13,514 (26.3) | 13,614 (28.1) | |
 Upper-middle | 8372 (27.0) | 11,628 (296.3) | 11,870 (24.5) | |
 Highest | 4858 (15.6) | 6304 (14.3) | 5552 (11.4) |