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Association of select prenatal risk factors and maternal age
| Feature | Median Age (IQR) | Median Age (IQR) | P-value |
|---|---|---|---|
| Without risk factor | With risk factor | ||
| Assisted reproductive therapy | 28 (25–32) | 33 (29–35) | <0.001 |
| Progesterone | 28 (25–32) | 31 (28–34) | <0.001 |
| Corticosteroids | 28 (25–32) | 30 (27–35) | 0.039 |
| Placental abnormalities | 28 (25–32) | 31 (27–34) | 0.012 |
| Gestational diabetes mellitus | 28 (25–32) | 32 (28–36) | <0.001 |
