Characteristics | Women followed | Women lost to follow-up or had missing data | P value |
---|---|---|---|
Age (y) | 29.55 ± 4.18 | 29.63 ± 4.34 | 0.079 |
Height (cm) | 160.03 ± 5.17 | 160.12 ± 4.91 | 0.094 |
Prenatal weight (kg) | 67.32 ± 8.32 | 67.20 ± 8.19 | 0.167 |
Previous PTB history(n(%)) | 252(1.8%) | 450(1.8%) | 0.655 |
HBV(n(%)) | 1320(9.4%) | 2414(9.9%) | 0.071 |