Table 2 Demographic Characteristics by Obesity Based on BMI
Characteristic | Underweight | Healthy weight/ | Overweight | Obese | χ2 |
|---|---|---|---|---|---|
n (%) | n (%) | n (%) | n (%) | ||
Gender | 412.538*** | ||||
 Male | 2754 (55.0) | 21,409 (48.8) | 2703 (506) | 3722 (62.1) |  |
 Female | 2257 (45.0) | 22,501 (51.2) | 2640 (49.4) | 2275 (37.9) |  |
Age | 273.122*** | ||||
 12 | 357 (7.1) | 3509 (8.0) | 613 (11.5) | 412 (6.9) |  |
 13 | 909 (18.1) | 7476 (17.0) | 861 (16.1) | 827 (13.8) | |
 14 | 933 (18.6) | 7429 (16.9) | 793 (14.8) | 868 (14.5) | |
 15 | 879 (17.5) | 7337 (16.7) | 834 (15.6) | 1017 (17.0) | |
 16 | 821 (16.4) | 7583 (17.3) | 825 (15.4) | 1171 (19.5) | |
 17 | 794 (15.8) | 7555 (17.2) | 1018 (19.1) | 1185 (19.8) | |
 18 | 318 (6.3) | 3021 (6.9) | 399 (7.5) | 517 (8.6) |  |
Economic status | 160.604*** | ||||
 Lowest | 104 (2.1) | 926 (2.1) | 142 (2.7) | 223 (3.7) | |
 Lower-middle | 585 (11.7) | 4833 (11.0) | 688 (12.9) | 886 (14.8) | |
 Middle | 2262 (45.1) | 20,494 (46.7) | 2445 (45.8) | 2659 (44.3) | |
 Upper-middle | 1510 (30.1) | 12,990 (29.6) | 1536 (28.7) | 1641 (27.4) | |
 Highest | 550 (11.0) | 4667 (10.6) | 532 (10.0) | 588 (9.8) | |
Academic achievement | 257.824 | ||||
 Lowest | 529 (10.6) | 3872 (8.8) | 566 (10.6) | 761 (12.7) | |
 Lower-middle | 1074 (21.4) | 9464 (21.6) | 1273 (23.8) | 1569 (26.2) | |
 Middle | 1425 (28.4) | 12,749 (26.6) | 1517 (28.4) | 1693 (28.2) | |
 Upper-middle | 1250 (24.9) | 11,693 (26.6) | 1352 (25.3) | 1328 (22.1) | |
 Highest | 733 (14.6) | 6132 (14.0) | 635 (11.9_ | 646 (10.8 |  |