Table 1 Sample size distribution by age and sex in Chinese children and adolescents
Age(years) | Boys | Girls | Total |
|---|---|---|---|
7 yr | 2076(53.3) | 1818(46.7) | 3894 |
8 yr | 1361(52.1) | 1251(47.9) | 2612 |
9 yr | 1593(50.0) | 1592(50.0) | 3185 |
10 yr | 1676(53.3) | 1466(46.7) | 3142 |
11 yr | 1675(53.1) | 1477(46.9) | 3152 |
12 yr | 1563(53.3) | 1372(46.7) | 2935 |
13 yr | 1506(52.5) | 1360(47.5) | 2866 |
14 yr | 1542(52.5) | 1397(47.5) | 2939 |
15 yr | 1713(51.6) | 1605(48.4) | 3318 |
16 yr | 1740(50.0) | 1737(50.0) | 3477 |
17 yr | 1479(49.1) | 1534(50.9) | 3013 |
18 yr | 1201(47.1) | 1347(52.9) | 2548 |
7–18 yr | 19,125(51.6) | 17,956(48.4) | 37,081 |