Table 1 Characteristics of births after IVF and SC pregnanciesa
Characteristic | IVF | SC | Proportion of |
|---|---|---|---|
n (%) | n (%) | IVF births (%) | |
Total | 1778 | 33,555 | 5.0 |
Year of birth | |||
2005–2009 | 708 (39.8) | 16,980 (50.6) | 4.0 |
2010–2014 | 1070 (60.2) | 16,575 (49.4) | 6.1 |
Maternal socio-demographic background | |||
Age (years) | |||
25–29 | 436 (24.5) | 22,849 (68.1) | 1.9 |
30–34 | 778 (43.8) | 8342 (24.9) | 8.5 |
35–40 | 564 (31.7) | 2364 (7.0) | 19.3 |
Ethnicity | |||
Estonian | 1248 (70.2) | 23,851 (71.1) | 5.0 |
Russian | 486 (27.3) | 8775 (26.2) | 5.2 |
Other | 44 (2.5) | 929 (2.8) | 4.5 |
Education | |||
Higher | 1010 (56.8) | 19,519 (58.2) | 4.9 |
Secondary | 716 (40.3) | 13,040 (38.9) | 5.2 |
Basic | 52 (2.9) | 996 (3.0) | 5.0 |
Marital status | |||
Married | 935 (52.6) | 11,779 (35.1) | 7.4 |
Cohabiting | 743 (41.8) | 19,698 (58.7) | 3.6 |
Single | 100 (5.6) | 2078 (6.2) | 4.6 |
Pregnancy-related characteristics | |||
Pre-eclampsia | |||
Yes | 78 (4.4) | 1007 (3.0) | 7.2 |
No/ unknown | 1700 (95.6) | 32,548 (97.0) | 5.0 |
Placenta previa | |||
Yes | 22 (1.2) | 51 (0.2) | 30.1 |
No/ unknown | 1756 (98.8) | 33,504 (99.8) | 5.0 |
Placental abruption | |||
Yes | 32 (1.8) | 250 (0.7) | 11.3 |
No/ unknown | 1746 (98.2) | 33,305 (99.3) | 5.0 |
Mode of delivery | |||
Vaginal | 994 (55.9) | 22,920 (68.3) | 4.2 |
Instrumental | 164 (9.2) | 2920 (8.7) | 5.3 |
Planned cesarean section | 217 (12.2) | 1698 (5.1) | 11.3 |
Emergency cesarean section | 403 (22.7) | 6017 (17.9) | 6.3 |
Pregnancy outcome | |||
Infant’s sex | |||
Male | 893 (50.2) | 17,200 (51.3) | 4.9 |
Female | 885 (49.8) | 16,355 (48.7) | 5.1 |
Gestational age (weeks) | |||
< 32 | 30 (1.7) | 270 (0.8) | 10.0 |
32–36 | 123 (6.9) | 1398 (4.2) | 8.1 |
≥ 37 | 1625 (91.4) | 31,887 (95.0) | 4.8 |
Birthweight (g) | |||
< 1500 | 22 (1.2) | 219 (0.7) | 9.1 |
1500–2499 | 87 (4.9) | 927 (2.8) | 8.6 |
2500–3499 | 872 (49.0) | 15,792 (47.1) | 5.2 |
3500–4499 | 764 (43.0) | 15,962 (47.6) | 4.6 |
≥ 4500 | 33 (1.9) | 655 (2.0) | 4.8 |
Small for gestational age | |||
Yes | 46 (2.6) | 613 (1.8) | 7.0 |
No | 1732 (97.4) | 32,942 (98.2) | 5.0 |
Apgar score at 5 min | |||
< 7 | 30 (1.7) | 401 (1.2) | 7.0 |
≥ 7 | 1747 (98.3) | 33,116 (98.7) | 5.0 |
Unknown | 1 (0.1) | 38 (0.1) | 2.6 |
Congenital anomalies | |||
Yes | 40 (2.3) | 506 (1.5) | 7.3 |
No/ unknown | 1738 (97.8) | 33,049 (98.5) | 5.0 |
Admission to a NICU | |||
Yes | 300 (16.9) | 4369 (13.0) | 6.4 |
No/ unknown | 1478 (83.1) | 29,186 (87.0) | 4.8 |