Table 6

Perinatal outcomes for twin pregnancies

Perinatal outcomesAll twin pregnancies (n=37)†Chorionicity
DCDA (n=23)MCDA (n=10)
Live births
Both babies:
 No/total No (%) expectant management‡14/34 (41)10/21 (48)3/9 (33)
 Worst-best possible outcome (range) (minimum No/total No (%) to maximum No/total No (%))§14/37 (38) to 17/37 (46)10/23 (43) to 12/23 (52)3/10 (30) to 4/10 (40)
Single baby:
 No/total No (%) expectant management‡3/34 (9)1/21 (5)2/9 (22)
 Worst-best possible outcome (range) (minimum No/total No (%) to maximum No/total No (%))§3/37 (8) to 12/37 (32)1/23 (4) to 6/23 (35)2/10 (20) to 4/10 (40)
Survival to hospital discharge
Both babies:
 No/total No (%) expectant management‡*6/30 (20)5/19 (26)1/8 (13)
 Worst-best possible outcome (range) (minimum No/total No (%) to maximum No/total No (%))§6/37 (16) to 10/37 (27)5/23 (22) to 7/23 (35)1/10 (10) to 2/10 (20)
Single baby:
 No/total No (%) expectant management‡*5/30 (17)3/19 (16)2/8 (25)
 Worst-best possible outcome (range) (minimum No/total No (%) to maximum No/total No (%))§5/37 (14) to 17/37 (46)3/23 (13) to 10/23 (43)2/10 (20) to 5/10 (50)
Termination for medical reasons
 No/total No (%) terminations for medical reasons of both fetuses3/37 (8)2/23 (9)1/10 (10)
 No/total No (%) terminations for medical reasons of one fetus6/37 (16)5/23 (22)1/10 (10)
  • DCDA=dichorionic-diamniotic; IQR=interquartile range; MCDA=monochorionic-diamniotic.

  • *Excludes pregnancies with babies that were live born at ≥22+0 weeks' gestational age with missing discharge status: dichorionic-diamniotic discharge status missing for both babies (n=2); monochorionic-diamniotic discharge status missing for one baby (n=1); unknown chorionicity discharge status missing for one baby (n=1).

  • †Four twin pregnancies with unreported chorionicity were included in the all twin pregnancies data only. The one triplet pregnancy was excluded from this table.

  • ‡Excludes pregnancies with termination for medical reasons.

  • §Includes pregnancies with termination for medical reasons and missing discharge status.