Table 2.
Maternal and birth characteristics
| Total cohort | Alspac | DNBC | FINNPEC | GenR | Lund | |
|---|---|---|---|---|---|---|
| N = 219575 | n = 13444 | n = 83532 | n = 1930 | n = 8363 | n = 545 | |
| Maternal age, years (mean, SD) | 29.8 (4.7) | 28.0 (5.0) | 29.8 (4.4) | 29.9 (5.4) | 29.7 (5.3) | 30.0 (5.0) |
| Parity, % 0 | 50.4 | 45 | 50.6 | 66.1 | 55.0 | 68.5 |
| BMI, kg/m2 | 23.0 | 21.6 | 22.6 | 23.6 | 23.9 | NA |
| (median, 90% range) | (18.7–32.9) | (17.6–30.7) | (18.6–31.9) | (19.1–34.4) | (19.4–33.7) | NA |
| Chronic hypertension, % yes | 1.3 | 3.8 | 0.2 | 10.6 | 1.9 | 0.9 |
| Gestational age birth, weeks | 40.0 | 40.0 | 40.0 | 39.0 | 40.1 | 38.7 |
| (median, 90% range) | (36.0–42.0) | (36.0–42.0) | (37.0–42.0) | (31.0-–42.0) | (36.9–42.0) | (29.2–41.7) |
| Birthweight, grams (mean, SD) | 3547.5 (585.0) | 3408.7 (551.5) | 3574.3 (571.9) | 3096.3 (861.6) | 3411.9 (561.5) | 3156.1 (866.2) |
| Fetal sex, % female | 48.8 | 48.4 | 48.8 | 50.8 | 49.5 | 50.3 |
| MoBa | OPB | PEPP | PREDO | SCOPE | VIP | |
|---|---|---|---|---|---|---|
| n = 98436 | n = 472 | n = 4274 | n = 1032 | n = 5573 | n = 1974 | |
| Maternal age, years (mean, SD) | 30.2 (4.6) | 31.7 (4.9) | 26.3 (6.3) | 32.3 (5.8) | 28.7 (5.5) | 30.8 (5.9) |
| Parity, % 0 | 46.7 | 53.8 | 68.1 | 31.8 | 100 | 49.9 |
| BMI, kg/m2 | 23.1 | 23.9 | 24.1 | 25.5 | 24.2 | 31.2 |
| (median, 90% range) | (18.9–32.5) | (19.1–35.9) | (18.1–39.2) | (19.1–39.5) | (19.5–34.7) | (21.1–43.4) |
| Chronic hypertension, % yes | 0.5 | 0.2 | 2.5 | 18.4 | 2.7 | 41.0 |
| Gestational age birth, weeks | 40.0 | 38.4 | 39.0 | 39.9 | 40.1 | 39.0 |
| (median, 90% range) | (37.0–42.0) | (28.6–40.3) | (33.0–41.0) | (36.4–41.9) | (36.6–41.7) | (33.1–41.9) |
| Birthweight, grams (mean, SD) | 3600.3 (560.5) | 3129.5 (1015.8) | 3141.0 (728.3) | 3510.7 (597.6) | 3415.6 (555.4) | 3217.7 (761.2) |
| Fetal sex, % female | 48.7 | 50 | 49.2 | 46.6 | 49.2 | 49.1 |
NA, not available.