Table 1 Characteristics of participants with lab test results (n = 2475) being performed at recruitment in Children cohort
Characteristics | No. participants | % |
|---|---|---|
Male, sex | 1246 | 50 |
Age at baseline (year) | ||
1 | 355 | 14 |
2 | 368 | 15 |
3 | 332 | 13 |
4 | 333 | 13 |
5 | 330 | 13 |
6 | 283 | 11 |
7 | 205 | 8 |
8 | 162 | 7 |
9 | 107 | 4 |
Ethnicity (Han) | 2474 | 100 |
Township | ||
Tianzhuang (1.5 persons per 104 m2) | 586 | 24 |
Jiangnan (2.1 persons per 104 m2) | 787 | 32 |
Qingtang (2.7 persons per 104 m2) | 1102 | 45 |
Birth mode* | ||
Full-term birth | 2344 | 95 |
Preterm birth | 105 | 4 |
Post-term birth | 25 | 1 |
Delivery mode* | ||
Natural childbirth | 1577 | 64 |
Caesarean | 897 | 36 |
Birth weight (kilograms) | 3.2 (0.5)# | / |
Underlying diseases*† | 16 | 1 |
Number of household members | ||
2 | 64 | 3 |
3 | 431 | 17 |
4 | 695 | 28 |
5 | 531 | 21 |
≥6 | 754 | 30 |
Parents | 1325 | 54 |
Others | 1150 | 46 |
Annual family income (RMB, Yuan) | ||
<20,000 | 611 | 25 |
[20,000, 50,000) | 1382 | 56 |
≥50 000 | 482 | 19 |
