Adjustment variables per outcome variable versus mode of birth in the study population, n=94 451
| Vaginal spontaneous | Vacuum/Forceps | Planned CS | Emergency CS | Total | |
| Count, n (%) | 34 007 (36.0) | 8076 (8.55) | 30 326 (32.1) | 22 042 (23.3) | 94 451 (100) |
| Outcomes | |||||
| Neonatal infection, n (%) | 277 (0.81) | 111 (1.37) | 129 (0.43) | 504 (2.29) | 1021 (1.08) |
| Asphyxia and/or respiratory distress, n (%) | 776 (2.28) | 406 (5.03) | 1262 (4.16) | 2159 (9.79) | 4603 (4.87) |
| Neonatal care/hospital care, n (%) | 3070 (9.03) | 1057 (13.09) | 3280 (10.82) | 4615 (20.94) | 12 022 (12.73) |
| Neonatal death, n (%) | 33 (0.1) | 14 (0.17) | 29 (0.1) | 114 (0.52) | 190 (0.2) |
| Maternal conditions | |||||
| Age, mean (SD) | 31.11 (4.44) | 32.07 (4.29) | 32.78 (4.72) | 32.23 (4.58) | 31.99 (4.61) |
| Smoking, n (%) | 1892 (5.85) | 380 (4.94) | 1773 (6.18) | 1261 (6.07) | 5306 (5.93) |
| Diabetes, n (%) | 192 (0.56) | 92 (1.14) | 647 (2.13) | 507 (2.3) | 1438 (1.52) |
| BMI ≥30, n (%) | 7199 (21.17) | 1575 (19.5) | 7649 (25.22) | 6443 (29.23) | 22 866 (24.21) |
| Mental illness, n (%) | 269 (0.79) | 75 (0.93) | 515 (1.7) | 282 (1.28) | 1141 (1.21) |
| Neonatal condition | |||||
| Prematurity, n (%) | 1378 (4.05) | 238 (2.95) | 800 (2.64) | 3055 (13.87) | 5471 (5.79) |
BMI, body mass index; CS, caesarean section.