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Table 2 Descriptive obstetric characteristics of women with singleton births in the period 1992-2010

From: Deliveries among teenage women – with emphasis on incidence and mode of delivery: a Swedish national survey from 1973 to 2010

  Age groups
Characteristics < 16 years 16-17 years 18-19 years 20-30 years
Spontaneous onset delivery 398 (84.3%) 4692 (87.3%) 20454 (86.8%) 753637 (84.3%)
Induced delivery 41 (8.7%) 434 (8.1%) 1985 (8.4%) 82566 (9.2%)
Normal vaginal delivery 396 (83.9%) 4599 (85.5%) 20006 (84.9%) 728163 (81.5%)
Forceps 2 (0.4%) 13 (0.2%) 96 (0.4%) 3812 (0.4%)
Vacuum extraction 29 (6.1%) 336 (6.3%) 1540 (6.5%) 63134 (7.1%)
CS¥ 45 (9.5%) 429 (8.0%) 1916 (8.1%) 98390 (11.0%)
Elective CS 20 (4.2%) 70 (1.3%) 316 (1.3%) 22105 (2.5%)
Acute CS 13 (2.8%) 168 (3.1%) 686 (2.9%) 33265 (3.7%)
GA < 28 weeks 4 (0.9%) 25 (0.5%) 71 (0.3%) 1576 (0.2%)
GA < 32 weeks 7 (1.5%) 73 (1.4%) 207 (0.9%) 5447 (0.6%)
GA < 37 weeks 54 (11.5%) 384 (7.2%) 1411 (6.0%) 42891 (4.8%)
GA 37 – 41 weeks 387 (82.3%) 4620 (86.1%) 20622 (87.6%) 787840 (88.2%)
GA ≥ 42 weeks 29 (6.2%) 363 (6.8%) 1514 (6.4%) 62595 (7.0%)
Epidural analgesia* 175 (41.0%) 2099 (42.4%) 8658 (40.0%) 221265 (27.8%)
Perineal rupture grade 1-2* 68 (15.9%) 689 (13.9%) 3204 (14.8%) 177205 (22.3%)
Perineal rupture grade 3-4* 4 (0.9%) 55 (1.1%) 218 (1.0%) 14190 (1.8%)
Preeclampsia 12 (2.5%) 89 (1.7%) 415 (1.8%) 13980 (1.6%)
Abruptio placentae 1 (0.2%) 29 (0.5%) 113 (0.5%) 3317 (0.4%)
Placenta previa 2 (0.4%) 1 (0.0%) 14 (0.1%) 1501 (0.2%)
PPH > 1000 ml (VD) 10 (2.3%) 125 (2.5%) 523 (2.4%) 26305 (3.3%)
PPH > 1000 ml (CS) 0 (0%) 9 (2.1%) 18 (0.9%) 1200 (1.2%)
  1. Figures denote numbers and proportions.
  2. CS = Caesarean section; GA = gestational age at delivery; PPH = postpartum haemorrhage; VD = vaginal delivery.
  3. ¥ All CS independent of status of performance – acute or elective.
  4. *Epidural analgesia and perineal rupture in vaginal deliveries.
  5. Caesarean section was subdivided into elective and acute CS from 1999.