Grouping | Group E (n = 192) | Group M (n = 127) | Group p (n = 73) | F(χ2)value | P value |
---|---|---|---|---|---|
Age (year) | 28.59 ± 4.36 | 28.27 ± 4.69 | 28.74 ± 4.38 | 0.312 | 0.732 |
Height (cm) | 163.22 ± 13.55 | 162.23 ± 13.85 | 158.97 ± 8.82 | 1.882 | 0.154 |
Weight (kg) | 67.69 ± 9.79 | 66.59 ± 10.16 | 68.54 ± 8.67 | 0.997 | 0.370 |
Gestation ( weeks ) | 39.47 ± 1.04 | 39.46 ± 0.97 | 39.41 ± 1.08 | 0.106 | 0.899 |
Gravidity | 1.80 ± 0.93 | 1.82 ± 1.10 | 1.73 ± 1.04 | 0.203 | 0.816 |
Parity | 1.43 ± 0.58 | 1.42 ± 0.67 | 1.33 ± 0.53 | 0.797 | 0.451 |
Pregnancy education (Y/N) | 133/59 | 92/35 | 43/20 | 1.571 | 0.456 |
Maternal education | Â | Â | Â | 1.035 | 0.904 |
 Below high school | 40 | 27 | 12 |  |  |
 Junior college and undergraduate | 129 | 84 | 53 |  |  |
 Postgraduate | 23 | 16 | 8 |  |  |
Family income per year | Â | Â | Â | 4.485 | 0.344 |
 > 20,000yuan (RMB) | 39 | 24 | 16 |  |  |
 10,000–20,000 yuan (EMB | 91 | 73 | 33 |  |  |
 < 10,000 yuan (RMB) | 62 | 30 | 24 |  |  |