Table 5 Comparison of maternal and neonatal outcomes in the four pre-pregnancy BMI groups
| Â | Pre-pregnancy BMI category | Â | |||
|---|---|---|---|---|---|
Underweight (N = 420) | Normal weight (N = 2292) | Overweight (N = 401) | Obese (N = 59) | P-value | |
Maternal outcomes | |||||
Gestational weeks | Â | Â | Â | Â | 0.267 |
   ≥ 28 and < 37 | 23 (5.5) | 96 (4.2) | 24 (6.0) | 4 (6.8) |  |
   ≥ 37 and < 42 | 397 (94.5) | 2191 (95.6) | 377 (94.0) | 55 (93.2) |  |
   ≥ 42 | 0 (0) | 5 (0.2) | 0 (0) | 0 (0) |  |
Delivery mode |  |  |  |  | <  0.001 |
  Eutocia | 284 (67.6) | 1312 (57.2) | 172 (42.9) | 26 (44.1) |  |
  Caesarean section | 126 (30.0) | 948 (41.4) | 223 (55.6) | 32 (54.2) |  |
  Midwifery practice | 10 (2.4) | 32 (1.4) | 6 (1.5) | 1 (1.7) |  |
Maternal complications | |||||
Anemia | Â | Â | Â | Â | 0.274 |
  No | 370 (88.1) | 1970 (86.0) | 336 (83.8) | 53 (89.8) |  |
  Yes | 50 (11.9) | 322 (14.0) | 65 (16.2) | 6 (10.2) |  |
PROM | Â | Â | Â | Â | 0.132 |
  No | 373 (88.8) | 2007 (87.6) | 339 (84.5) | 55 (93.2) |  |
  Yes | 47 (11.2) | 285 (12.4) | 62 (15.5) | 4 (6.8) |  |
GDM |  |  |  |  | <  0.001 |
  No | 387 (92.1) | 2041 (89) | 325 (81) | 47 (79.7) |  |
  Yes | 33 (7.9) | 251 (11.0) | 76 (19.0) | 12 (20.3) |  |
GHp |  |  |  |  | <  0.001 |
  No | 415 (98.8) | 2246 (98.0) | 375 (93.5) | 52 (88.1) |  |
  Yes | 5 (1.2) | 46 (2.0) | 26 (6.5) | 7 (11.9) |  |
Neonatal outcomes | |||||
Birth weight |  |  |  |  | <  0.001 |
  Low birth weight | 21 (5.0) | 78 (3.4) | 10 (2.5) | 3 (5.1) |  |
  Normal birth weight | 383 (91.2) | 2070 (90.3) | 337 (84.0) | 47 (79.7) |  |
  Macrosomia | 16 (3.8) | 144 (6.3) | 54 (13.5) | 9 (15.3) |  |
Gestational age (GA) |  |  |  |  | <  0.001 |
  Small for GA | 32 (7.6) | 137 (6.0) | 13 (3.2) | 0 (0) |  |
  Normal GA | 363 (86.4) | 1934 (84.4) | 311 (77.6) | 48 (81.4) |  |
  Large for GA | 25 (6.0) | 221 (9.6) | 77 (19.2) | 11 (18.6) |  |