Table 3 The basic characteristics of the subjects in Qufu and Zhongshan
Category | Girls | Boys | Total |
|---|---|---|---|
3993 (%) | 4630 (%) | 8623 (%) | |
Age (years) | |||
 6 ≤ age<8 | 2365 (59.23) | 2821 (60.93) | 5186 (60.14) |
 8 ≤ age<11 | 1628 (40.77) | 1809 (39.07) | 3437 (39.86) |
Districts | |||
 Urban | 3151 (78.91) | 3518 (75.98) | 6669 (77.34) |
 Suburban | 842 (21.09) | 1112 (24.02) | 1954 (22.66) |
Weight status | |||
 Thinness | 720 (18.04) | 629 (13.59) | 1349 (15.64) |
 Normal weight | 2594 (64.96) | 2801 (60.50) | 5395 (62.57) |
 Overweight or obesity | 679 (17.00) | 1200 (25.91) | 1879 (21.79) |