Table 1.
Maternal age and parity at first pregnancy in study period resulting in live birth or stillbirth, by pre-eclampsia status and timing of delivery, Denmark, 1978-2015. Values are numbers (percentages)
| Age/parity | Pre-eclamptic pregnancy | Normotensive pregnancy | |||||
|---|---|---|---|---|---|---|---|
| Early preterm delivery | Late preterm delivery | Term delivery | Early preterm delivery | Late preterm delivery | Term delivery | ||
| Total | 2651 (0.2) | 4450 (0.4) | 33 524 (3.1) | 17 790 (1.7) | 41 705 (3.9) | 972 210 (90.7) | |
| Maternal age (years): | |||||||
| <20 | 89 (3.4) | 150 (3.4) | 1257 (3.8) | 817 (4.6) | 1735 (4.2) | 35 021 (3.6) | |
| 20-24 | 594 (22.4) | 962 (21.6) | 8749 (26.1) | 3912 (22.0) | 9636 (23.1) | 240 541 (24.7) | |
| 25-29 | 979 (36.9) | 1728 (38.8) | 13 118 (39.1) | 6339 (35.6) | 16 256 (39.0) | 394 240 (40.6) | |
| 30-34 | 677 (25.5) | 1088 (24.5) | 7176 (21.4) | 4515 (25.4) | 9827 (23.6) | 221 316 (22.8) | |
| ≥35 | 312 (11.8) | 522 (11.7) | 3224 (9.6) | 2208 (12.4) | 4251 (10.2) | 81 092 (8.3) | |
| Parity*: | |||||||
| 1 | 2588 (97.6) | 4313 (96.9) | 31 581 (94.2) | 16 618 (93.4) | 38 995 (93.5) | 887 714 (91.3) | |
| 2 | 59 (2.2) | 118 (2.7) | 1631 (4.9) | 965 (5.4) | 2249 (5.4) | 71 172 (7.3) | |
| ≥3 | 4 (0.2) | 19 (0.4) | 312 (0.9) | 207 (1.2) | 461 (1.1) | 13 324 (1.4) | |
Early preterm delivery: delivery <34 weeks. Late preterm delivery: delivery 34-36 weeks. Term delivery: delivery ≥37 weeks.
*
Parity based on live births and stillbirths.