From: Sex differences in fetal Doppler parameters during gestation
Characteristic | Female (n = 87) | Male (n = 90) |
---|---|---|
Maternal age at delivery (years) | 34 [23–43] | 34 [18–43] |
Maternal pre-pregnancy body mass index (kg/m2) | 25.2 [17.5–43.6] | 25.3 [17.4–43.6] |
Race (%) | Â | Â |
 Asian | 25 (22/87) | 18 (16/90) |
 Black or African American | 9 (8/87) | 13 (12/90) |
 White | 62 (54/87) | 65 (58/90) |
 Other | 4 (3/87) | 4 (4/90) |
Gestational age at first ultrasound visit (weeks) | 16 [15-17] | 16 [12-17] |
Cesarean delivery (%) | 36 (31/87) | 41 (37/90) |
Gestational age at delivery (weeks) | 38 [30–41] | 38 [31–40] |
Birth weight (g) | 3159 [1390–4390] | 3422 [1410–4630]a |