Trends in adjusted mean BMI, BMI z-score and BMI categories in Chinese children aged 8–17 years between 1985 and 2010
| Survey year | Adjusted BMI, kg/m2* | Adjusted BMI z-score* | BMI category, % | |||
|---|---|---|---|---|---|---|
| Thin | Normal weight | Overweight | Obesity | |||
| Boys | ||||||
| 1985 | 16.8 (0.01) | −0.99 (0.003) | 31.3 | 68.4 | 0.4 | 0.0 |
| 1995 | 17.4 (0.01) | −0.73 (0.004) | 24.8 | 70.9 | 4.0 | 0.4 |
| 2000 | 17.9 (0.01) | −0.56 (0.004) | 22.2 | 69.3 | 7.1 | 1.4 |
| 2005 | 18.4 (0.01) | −0.35 (0.004) | 18.9 | 68.7 | 10.1 | 2.3 |
| 2010 | 18.9 (0.01) | −0.18 (0.004) | 15.8 | 68.2 | 12.6 | 3.4 |
| Girls | ||||||
| 1985 | 17.1 (0.01) | −0.81 (0.002) | 34.2 | 65.2 | 0.7 | 0.0 |
| 1995 | 17.5 (0.01) | −0.67 (0.003) | 29.1 | 68.0 | 2.8 | 0.1 |
| 2000 | 17.8 (0.01) | −0.57 (0.003) | 27.1 | 67.9 | 4.6 | 0.4 |
| 2005 | 18.1 (0.01) | −0.44 (0.003) | 23.6 | 69.8 | 6.0 | 0.6 |
| 2010 | 18.4 (0.01) | −0.33 (0.003) | 20.7 | 70.8 | 7.6 | 0.9 |
*Data presented as mean (SE) after adjusting for age, province and urban/rural area.
BMI, body mass index.