Skip to main content

Table 1 Birth and placental weights refer to measurements obtained immediately after delivery

From: Magnesium sulfate has sex-specific, dose-dependent vasodilator effects on preterm placental vessels

Characteristic Term (39–41 weeks) Preterm (32–<36 weeks)
(n = 20) (n = 14)
Maternal age (years) 31.1 ± 0.9 29.1 ± 1.5
Maternal weight (kg) 71 ± 2.5 67 ± 2.4
Maternal race or ethnic group (%)
 NZ European 73 61
 Chinese 12 17
 Pacific Islands 15 22
Nulliparous (%) 0 0
Parity 1.7 ± 0.15 1.8 ± 0.1
Twin gestation (%) 0 0
Smoking during pregnancy (%) 0 5 (1 patient)
Alcohol use during pregnancy (%) 0 0
MgS04 treatment during pregnancy (%) 0 0
In vitro fertilisation (%) 8 0
Infant sex
 Male 10 7
 Female 10 7
Gestational age (weeks)
 Male 392 ± 02 336 ± 13
 Female 396 ± 02 335 ± 11
Birth weight (g)
 Male 3579 ± 83* 2299 ± 191
 Female 3434 ± 79* 1969 ± 283
Placental weight (g)
 Male 620 ± 82* 540 ± 72
 Female 580 ± 79* 517 ± 91
  1. Race or ethnic group was self-reported. n = 20 subjects for term pregnancies (n = 10 male, n = 10 female) and n = 14 subjects for preterm pregnancies (n = 7 male, n = 7 female). Data are shown as ± SEM and percentages where stated
  2. NS not significant
  3. *Denotes statistical significance (P < 0.05) between groups by Student t test