Table 1. Anthropometric measurements of the participants according to sex and study year.
| Variable | Boys | Girls | ||||
|---|---|---|---|---|---|---|
| 1998 | 2010 | P value | 1998 | 2010 | P value | |
| Number | 661 | 443 | 617 | 370 | ||
| Age (yr) | 14.1±0.1 | 14.2±0.1 | 0.367 | 14.2±0.1 | 14.1±0.2 | 0.668 |
| Height (cm) | 162.6±0.3 | 164.1±0.5 | 0.022 | 156.2±0.3 | 156.8±0.4 | 0.065 |
| Weight (kg) | 53.5±0.5 | 57.1±0.7 | <0.001 | 48.7±0.4 | 50.1±0.7 | 0.047 |
| Waist circumference (cm) | 69.7±0.4 | 71.4±0.6 | 0.020 | 66.7±0.4 | 67.2±0.5 | 0.543 |
| Body mass index (kg/m2) | 19.9±0.1 | 20.9±0.2 | <0.001 | 19.8±0.1 | 20.3±0.2 | 0.092 |
| Obesity level* (%) | ||||||
| Normal weight | 87.7 | 80.3 | 0.003 | 83.3 | 81.9 | 0.460 |
| Overweight | 8.4 | 12.5 | 11.5 | 10.6 | ||
| Obese | 3.9 | 7.2 | 5.2 | 7.5 | ||
Values are presented as mean±standard error of mean unless otherwise indicated.
*Obesity level was determined according to the sex and age-specific body mass index (BMI) percentile: normal (BMI<85th percentile), overweight (BMI≥ 85th percentile and <95th percentile), and obese (BMI≥95th percentile).