Table 1.
Characteristics of the mothers and fetuses in the study
| Female (n = 115) | Male (n = 104) | All (n = 219) | |
|---|---|---|---|
| N (%)c | N (%) | N (%) | |
| Ethnicity | |||
| White | 94 (81.7) | 82 (78.8) | 176 (80.4) |
| Black | 1 (0.9) | 2 (1.9) | 3 (1.4) |
| East Asian | 2 (1.7) | 4 (3.8) | 6 (2.7) |
| South Asian | 2 (1.7) | 3 (2.9) | 5 (2.3) |
| Not Disclosed | 16 (13.9) | 13 (12.5) | 29 (13.2) |
| Fetal position | |||
| Breech | 30 (26.1) | 31 (29.8) | 61 (27.8) |
| Cephalic | 79 (68.7) | 64 (61.5) | 143 (65.3) |
| Transverse | 2 (1.7) | 2 (1.9) | 4 (1.8) |
| Variable | 2 (1.7) | 2 (1.9) | 3 (1.4) |
| Not Available | 2 (1.7) | 4 (3.8) | 6 (2.7) |
| Mean (SD) | Mean (SD) | Mean (SD) | |
|---|---|---|---|
| Maternal Age | 32.2 (4.3) | 32.7 (4.8) | 32.4 (4.5) |
| GA at time of scan | 27.9 (1.25) | 28.0 (1.25) | 28.0 (1.25) |
| EFWa | 1196.1 (228.3) | 1238.6 (232.36) | 1216.5 (230.7) |
| Birth informationb | Female (n = 99) | Male (n = 92) | All (n = 191) |
|---|---|---|---|
| N (%) | N (%) | N (%) | |
| Delivery type | |||
| SVD | 63 (63.6) | 46 (50) | 109 (57) |
| C‐section | 27 (27.3) | 30 (32.6) | 57 (30) |
| Assisted vaginal | 9 (9.1) | 15 (16.3) | 24 (12. 5) |
| Vaginal breech | 0 (0) | 1 (1.1) | 1 (0.5) |
| Mean (SD) | Mean (SD) | Mean (SD) | |
|---|---|---|---|
| Birth weight, g | 3382.0 (540.4) | 3460.9 (481.7) | 3420.0 (513.16) |
| Gestation at birth, wk | 39.6 (1.6) | 39.6 (1.5) | 39.6 (1.56) |
a
EFW data were not obtainable for four fetuses (one male, three female) because of fetal positioning.
b
Birth data were not obtainable for 25 infants, as they gave birth at home or in another country.
c
Percentages may not add up to 100 because of rounding.