Table 1 Clinical characteristics of the pregnant women
Group | Early-onset (n = 52) | Late-onset (n = 75) |
|---|---|---|
maternal age (years) | 33.6(19.9–43.5) | 32.4(20.5–41.5) |
height(cm) | 160.1(154.5–171.5) | 161.2(149.5–169.3) |
BMIa | 23.3(19.2-26.8) | 24.1(18.5–27.4) |
Nullipara | (62.4%) | (65.3%) |
gestational age at diagnosis(weeks) | 22.5(19.0–23.8)b | 28.2(24.0-32.5)b |