TABLE 2.
Adverse outcomes experienced by participants and their frequency.
| Characteristic | Total n = 181 (%) | Monochorionic n = 54 (%) | Dichorionic n = 127 (%) |
|---|---|---|---|
| Total pregnancies | 109 (60.2) | 33 (30.3) | 75 (59.1) |
| Preterm birth | 88 (48.6) | 24 (44.4) | 68 (53.5) |
| Unexpected admission to the neonatal unit | 74 (40.9) | 27 (50.0) | 46 (36.2) |
| Apgar <7 at 5 min | 31 (17.1) | 6 (11.1) | 25 (19.7) |
| Neonatal death | 4 (2.2) | 1 (2.0) | 2 (1.6) |
| Stillbirth | 3 (1.7) | 0 (0) | 3 (2.4) |
| Hypoxic ischemic encephalopathy | 0 (0) | 0 (0) | 0 (0) |
Note: Data are presented as total values and percentages, also presented according to chorionicity. Adverse outcomes displayed are not mutually exclusive. An admission to the neonatal unit after 37 weeks' gestation was considered “unexpected”. Also, preterm birth was defined as birth before recommended by NICE guidelines (eg monochorionic monoamniotic 32 weeks' gestation, monochorionic diamniotic 36 weeks' gestation and dichorionic diamniotic 37 weeks' gestation).