Variables | Crude OR | OR 95% CI | Pvalue |
---|---|---|---|
Maternal education level (years)* | 1.060 | 1.032-1.088 | < 0.001 |
Husband education level (years)* | 1.069 | 1.031-1.109 | < 0.001 |
Maternal age (24-31 y as control) | Â | Â | Â |
≤ 23 y | 0.830 | 0.680-1.103 | 0.067 |
≥ 32 y | 1.058 | 0.868-1.290 | 0.576 |
Family annual income (≤ 3000 yuan as control) |  |  |  |
3001-7499 yuan | 1.316 | 1.091-1.586 | 0.004 |
≥ 7500 yuan | 1.388 | 1.092-1.763 | 0.007 |
Antenatal care# | Â | Â | Â |
No | - | - | - |
Yes | 1.356 | 1.142-1.611 | 0.001 |
Antenatal ultrasound scans (frequencies)*& | 1.342 | 1.265-1.423 | < 0.001 |
Pregnancy complications | Â | Â | Â |
No | - | - | - |
Yes | 1.601 | 1.308-1.961 | < 0.001 |
Previous adverse pregnant outcomes | Â | Â | Â |
No | - | - | - |
Yes | 1.726 | 1.232-2.417 | 0.001 |
Primiparity | Â | Â | Â |
No | - | - | - |
Yes | 1.241 | 1.042-1.479 | 0.016 |
Preterm deliveries | Â | Â | Â |
No | - | - | - |
Yes | 0.865 | 0.615-1.218 | 0.407 |
Large for date infants | Â | Â | Â |
No | - | - | - |
Yes | 0.875 | 0.663-1.154 | 0.343 |