Table 2 Obstetric characteristics of the study population
n (%) | |
|---|---|
Gestational age at birth | |
Preterm (<37w) | 21 (3.3) |
Term (37–42w) | 552 (85.7) |
Postterm (>42w) | 60 (9.3) |
Missing | 11 |
Delivery start | |
Spontaneous | 512 (79.6) |
Induction | 131 (20.4) |
Missing | 1 |
Epidural analgesia | |
No | 314 (48.8) |
Yes | 330 (51.2) |
Missing | 0 |
Oxytocin stimulation | |
No | 306 (48.5) |
Yes | 325 (51.5) |
Missing | 12 |
Duration of active 2nd stage | |
≤ 15 min | 124 (19.9) |
16–60 min | 346 (55.5) |
> 60 min | 154 (24.7) |
Missing | 20 |
Episiotomy | |
No | 579 (91.3) |
Yes | 55 (8.7) |
Missing | 9 |
Maternal position at birth | |
Lithotomy | 353 (55.6) |
Squatting | 1 (0.16) |
Kneeling | 11 (1.7) |
Supine | 18 (2.8) |
Lateral | 98 (15.2) |
Sitting | 153 (23.8) |
Standing | 1 (0.16) |
Missing | 9 |
Mode of delivery | |
Spontaneous | 527 (81.8) |
Instrumental | 117 (18.2) |
Missing | 0 |
Manual perineal protection | |
None | 8 (1.3) |
Fetal head support only | 30 (4.8) |
Perineal head support only | 82 (13.0) |
Combined support | 409 (65.0) |
Unspecified support | 100 (15.9) |
Missing | 15 |
Fetal scalp electrode | |
No | 279 (44.2) |
Yes | 352 (55.8) |
Missing | 12 |
Fetal presentation | |
Occiput anterior | 611 (96.4) |
Occiput posterior | 23 (3.6) |
Breech | 0 |
Missing | 10 |
Fetal birth weight | |
≤ 4000 g | 541 (84.1) |
> 4000 g | 102 (15.9) |
Missing | 1 |
Fetal head circumference | |
≤ 35 cm | 278 (43.4) |
> 35 cm | 363 (56.6) |
Missing | 3 |
Number of births | |
Singleton | 641 (99.7) |
Twins | 2 (0.3) |
Missing | 1 |