Table 4

Monochorionic versus dichorionic/trichorionic multiples: demographics, DR measures and outcomes

Monochorionic
(n=44)
Dichorionic/trichorionic
(n=46)
P valueAdjusted
p value*
Neonatal and Maternal Demographics
 Gestational age, weeks, median (range)30.6 (25.6–32.7)31.7 (24.6–32.9)
 Birth weight, grams, median (range)1416 (610–2205)1540 (600–2560)0.2
 Caesarean section, %89910.8
 Male sex, %41540.3
 Antenatal steroids, %95100
Delivery room measures
 1 min Apgar <3, %590.50.4
 5 min Apgar <7, %14110.70.8
 Delivery room intubation, %1170.40.7
 Delivery room chest compression, %221.01.0
 Admission temperature, °C, mean (SD)36.8 (0.4)37.0 (0.5) 0.046 0.04
Respiratory and haematological outcomes
 Surfactant, %27130.20.2
 Any intubation, %25130.20.2
 Pneumothorax, %04
 Early (<72 hours) red blood cell transfusion, %540.80.3
 Any red blood cell transfusion, %27130.10.2
 Initial haematocrit (<2 hours), mean (SD)‡50.7 (7.4)49.9 (7.0)0.80.3
 Haematocrit at 12–24 hours, mean (SD)§54.3 (8.0)53.7 (7.8)0.80.6
 Polycythaemia (haematocrit >65%), %00
 Peak bilirubin, mg/dL, mean (SD)8.4 (2.4)8.9 (2.4)0.40.9
 Exchange transfusion, %00
Neonatal mortality and morbidity
 NICU death, %00
 Severe intraventricular haemorrhage, %02
 Chronic lung disease, %1670.20.4
 Late-onset sepsis, %4.520.50.6
 Necrotising enterocolitis, %20
 Severe retinopathy of prematurity, %57
 Survival without major morbidity, %82850.60.7
  • *Adjusted for birth weight.

  • †Insufficient events to run particular model for statistical analysis.

  • ‡Missing data=18%.

  • §Missing data=40%.