Table 2.
Outcomes of the deliveries in 2000–2014 of diagnosed SLE patients and their population controls in Finland
| Outcomes of the deliveries | SLE n = 163 | Controls n = 580 | p value |
|---|---|---|---|
| Number of infants, n (%) | 0.73 | ||
| Singleton | 160 (98) | 571 (98) | |
| Twins | 3 (2) | 9 (2) | |
| Gestational hypertension without proteinuria, n (%) | 8 (5) | 39 (7) | 0.10 |
| Pre-eclampsia, n (%) | 7 (4) | 18 (3) | 0.46 |
| Type of delivery, n (%) | 0.034 | ||
| Vaginal | 123 (76) | 480 (84) | |
| Elective caesarean section | 14 (9) | 42 (7) | |
| Urgent caesarean section | 25 (15) | 50 (9) | |
| One minute Apgar score, mean (SD) | 8.4 (1.5) | 8.6 (1.2) | 0.10 |
| NICU treatment*, n (%) | 34 (21) | 66 (11) | 0.002 |
| Antibiotics after delivery*, n (%) | 17 (10) | 35 (6) | 0.052 |
| Gestational age, weeks, mean (SD) | 38.9 (2.5) | 39.6 (1.8) | < 0.001 |
| < 28.0, n (%) | 2 (1) | 2 (0) | |
| 28.0–31.9, n (%) | 3 (2) | 1 (0) | |
| 32.0–33.9, n (%) | 0 (0) | 4 (1) | |
| 34.0–36.9, n (%) | 13 (8) | 23 (4) | |
| ≥ 37.0, n (%) | 145 (89) | 550 (95) | |
| Boy, n (%) | 87 (53) | 292 (50) | 0.49 |
| Birth weight, g, mean (SD) | |||
| Girl | 3153 (622) | 3439 (526) | < 0.001 |
| Boy | 3442 (702) | 3554 (559) | 0.12 |
| Birth weight, Z score, mean (SD) | − 0.00 (1.00) | 0.00 (1.00) | 0.99 |
| Macrosomia, birthweight ≥ 4500 g, n (%) | 3 (2) | 11 (2) | 0.99 |
| Birth length, cm, mean (SD) | |||
| Girl | 48.5 (3.5) | 49.6 (2.6) | 0.002 |
| Boy | 50.1 (2.8) | 50.6 (2.6) | 0.18 |
| Ponderal index, kg/m3, mean (SD) | 27.4 (2.9) | 27.6 (2.6) | 0.40 |
*before age of seven days
SLE systemic lupus erythematosus, n number, SD standard deviation, g gram, cm centimetre, m3 cubic metre, NICU care at neonatal intensive care unit