Table 1 Perinatal variables in the low and normal superior vena cava (SVC) flow groups
Low SVCNormal SVCTwo-sided p value
Birth weight (kg) (median)1.141.170.76
Apgar score 1 (median)560.23
Apgar score 5 (median)78.50.15
Gestational age (weeks) (median)26.50280.12
Gender (female %)75670.99
Surfactant (%)100630.08
Ventilation (%)75370.11
Hours of life (median)18190.36