| Site 1 | Site 2 |
---|---|---|
Maternal age [years (SD)]* | 29.9 (4.4) | 27.5 (5.5) |
Maternal pre-pregnancy BMI continuous Maternal pre-pregnancy BMI class (%) | 24.2 (3.78) | 25.1 (4.0) |
Underweight BMI < 18.5 | n = 4 (2.6%) | n = 3 (3.8%) |
Normal weight BMI 18.5–25 | n = 95 (62.6%) | n = 42 (53.1%) |
Overweight BMI 25–30 | n = 38 (25%) | n = 25 (31.7%) |
Obese BMI > 30 Maternal race and ethnicity (%)* | n = 15 (9.8%) | n = 9 (11.4%) |
Hispanic | n = 0 0% | n = 38 (48.1%) |
Non-Hispanic | n = 152,100% | n = 41 (51.9%) |
Years of formal maternal education (%) | ||
 Less than or equal to 12 years | n = 40 (27.2%) | n = 22 (27.8%) |
 Between 12 and 15 years | n = 49 (33.3%) | n = 30 (38.0%) |
 Greater than or equal to 15 years | n = 58 (39.5%) | n = 27 (34.2%) |
Obstetric risk (yes/no) | n = 25 (16.5%) | n = 24 (30.3%) |
Infant demographics | ||
 Gestational age at birth [weeks (SD)]* | 39.9 (1.2) | 39.3 (1.5) |
Postnatal age at scan [days (SD)] | 26.7 (8.1) | 25.6 (12.5) |
 Infant sex (N = male/female) | n = 82/70 (54/46%) | n = 45/34 (57/43%) |