The presence and absence of oligohydramnios with respect to the presence of selected conditions of severe neonatal morbidity.

The categorical variables were compared using Fisher's exact test [values presented as numbers (%)]. Severe neonatal morbidity was defined as a need for intubation, respiratory distress syndrome, pneumonia, bronchopulmonary dysplasia, retinopathy of prematurity, intraventricular hemorrhage, necrotizing enterocolitis, early-onset sepsis, late-onset sepsis and/or neonatal death before hospital discharge. The presence and absence of oligohydramnios with respect to the presence of selected conditions of severe neonatal morbidity.