Table 3 Obstetric and baby outcomes for women with singleton pregnancy giving birth from 28 weeks’ gestation; 6545 women with BMI ≥ 30 (obesity and severe obesity) versus 39,000 women with BMI 18.5-24.9 (normal weight)
Outcome | BMI ≥ 30 x̄ n (%) | BMI 18.5–24.9 n (%) | Rate Ratio (95% CI) | P-value |
|---|---|---|---|---|
Induction of labor | 1762 (26.9) | 6625 (17.0) | 1.58 (1.51 – 1.66) | < 0.001 |
Cesarean section (total) | 1761 (26.9) | 7101 (18.2) | 1.48 (1.41 – 1.55) | < 0.001 |
Pre-labor | 819 (12.5) | 3768 (9.7) | 1.30 (1.21-1.39) | < 0.001 |
In labor | 942 (14.4) | 3333 (8.5) | 1.68 (1.57-1.80) | < 0.001 |
Instrumental delivery | 2017 (30.8) | 9525 (24.4) | 1.26 (1.21-1.31) | < 0.001 |
Preterm delivery (< 37 + 0) | 320 (4.9) | 1496 (3.8) | 1.27 (1.13-1.43) | < 0.001 |
Birth gestation > 41 + 6 | 362 (5.5) | 2085 (5.3) | 1.03 (0.93-1.15) | 0.54 |
Apgar Score < 10 at 5 mine,a | 1043 (16.0) | 4701 (12.1) | 1.32 (1.24-1.41) | < 0.001 |
Apgar Score < 7 at 5 mine,a | 104 (1.6) | 403 (1.0) | 1.54 (1.24-1.90) | < 0.001 |
Apgar Score < 4 at 5 mine,a | 44 (0.7) | 150 (0.4) | 1.75 (1.24-2.42) | 0.002 |
Birthweight (mean)d,b | 3631.9 | 3496.5 | (-150.1– -120.7) | < 0.001 |
Birthweight ≤ 10th centilef,b | 509 (7.8) | 4211 (10.8) | 0.72 (0.66-0.79) | < 0.001 |
Birthweight < 2SDg,b | 176 (2.7) | 1207 (3.1) | 0.87 (0.74-1.01) | 0.07 |
LGAb | 625 (9.6) | 1121 (2.9) | 3.33 (3.02-3.65) | < 0.001 |
Admitted to NICU | 591 (9.0) | 2554 (6.5) | 1.38 (1.26-1.50) | < 0.001 |