Table 3. Consistency of BMI and body weight perception by sex, age, residence, and school categorya.
| Total | Underestimation | Consistency | Overestimation | χ2 | p | ||||
|---|---|---|---|---|---|---|---|---|---|
| N (%) | N (%) | N (%) | |||||||
| All respondents | 9727 | 2746(28.2) | 6457(66.4) | 524(5.4) | |||||
| Sex | |||||||||
| Boys | 4843 | 1822(37.6) | 2901(59.9) | 120(2.5) | 135.4 | 0.001 | |||
| Girls | 4884 | 1346(27.6) | 3300(67.6) | 238(4.8) | |||||
| Age (years) | |||||||||
| 7–12 | 4451 | 1644(36.9) | 2688(60.4) | 119(2.7) | 248.4 | <0.001 | |||
| 13–18 | 5276 | 1129(21.4) | 3818(72.4) | 329(6.2) | |||||
| Residence | |||||||||
| Urban | 5171 | 1730(33.5) | 3262(63.0) | 179(3.5) | 1.3 | 0.756 | |||
| Rural | 4556 | 1479(32.5) | 2908(63.8) | 169(3.7) | |||||
| School category | |||||||||
| Primary school | 3832 | 1440(37.6) | 2287(59.7) | 105(2.7) | 297.6 | <0.001 | |||
| Junior high school | 2979 | 684(23.0) | 2165(72.7) | 130(4.4) | |||||
| Senior high school | 2916 | 563(19.3) | 2068(70.9) | 285(9.8) | |||||
a Weighted for complex survey was used in the statistical analysis.