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Clinical characteristics of the two groups
| Thick placentas (n = 138) | Controls (n = 3045) | p value | |
|---|---|---|---|
| Maternal age | 30 (16–43) | 30 (15–45) | N.S. |
| Gestational age at delivery | 38 (27–41) | 39 (23–42) | < 0.05 |
| Birth weight | 2882 (710–3884) | 2956 (312–4410) | < 0.05 |
| 1-min Apgar score | 8 (0–9) | 8 (0–10) | < 0.05 |
| 5-min Apgar score | 9 (0–10) | 9 (0–10) | N.S. |
| pH of umbilical artery | 7.312 (6.989–7.405) | 7.314 (6.547–7.544) | < 0.05 |
Median (range). N.S., not significant.
