Table 2. Comparison of maternal complications by chorionicity and mode of conception.
| MCDA (n = 456) |
DCDA (n = 697) |
|||||||
|---|---|---|---|---|---|---|---|---|
| ART (n = 29) | SC (n = 427) | Unadjusted OR (95% CI) | Adjusted OR (95% CI)a | ART (n = 382) | SC (n = 315) | Unadjusted OR (95% CI) | Adjusted OR (95% CI)b | |
| Gestational hypertension–n (%) | 2 (6.9) | 11 (2.6) | 2.8 (0.6, 13.3) | 4.3 (0.8, 24.4) | 27 (7.1) | 12 (3.8) | 1.9 (1.0, 1.8) | 1.5 (0.7, 1.6) |
| Preeclampsia–n (%) | 2 (6.9) | 23 (5.4) | 1.3 (0.3, 5.8) | 1.5 (0.3, 7.2) | 40 (10.5) | 31 (9.8) | 1.1 (0.7, 1.9) | 1.0 (0.6, 1.7) |
| GDM–n (%) | 3 (10.3) | 42 (9.8) | 1.1 (0.3, 3.6) | 0.5 (0.1, 2.4) | 59 (15.5) | 40 (12.7) | 1.3 (0.8, 9.6) | 1.0 (0.7, 8.4) |
| ICP–n (%) | 1 (3.5) | 13 (3.0) | 1.1 (0.1, 9.0) | 1.7 (0.2, 14.5) | 27 (7.1) | 6 (1.9) | 3.9 (1.6, 7.2) | 3.3 (1.3, 5.6) |
| Previa–n (%) | 3 (10.3) | 10 (2.3) | 4.8 (1.2, 18.6) | 4.5 (0.8, 24.6) | 25 (6.5) | 7 (2.2) | 3.1 (1.3,18.3) | 2.3 (0.9, 17.4) |
| Placental abruption–n (%) | 0 | 0 | – | – | 2 (0.5) | 1 (0.3) | 1.7 (0.1, 1.5) | 1.4 (0.1, 1.4) |
| PPH–n (%) | 6 (20.7) | 37 (8.7) | 2.8 (1.1, 5.2) | 2.4 (0.8, 8.3) | 47 (12.3) | 41 (13.0) | 0.9 (0.6, 1.2) | 0.9 (0.6, 1.4) |
| PPROM–n (%) | 8 (27.6) | 63 (14.8) | 2.2 (0.9, 3.9) | 3.0 (1.1, 3.2) | 62 (16.2) | 62 (19.7) | 0.8 (0.5, 1.1) | 0.9 (0.6, 1.2) |
| Maternal composite outcomes–n (%) | 12 (41.4) | 114(26.7) | 1.9 (0.9, 4.2) | 1.3 (0.5, 3.1) | 182 (47.6) | 121 (38.4) | 1.5 (1.1, 2.0) | 1.2 (0.8, 1.6) |
GDM: gestational diabetes mellitus; ICP: intrahepatic cholestasis of pregnancies; PPH: Postpartum hemorrhage; PPROM: preterm premature rupture of membranes; ART: assisted reproductive technology; SC: spontaneous conception.
aControlled for maternal age and body mass index.
bControlled for maternal age and parity.