corrected age = age corrected for degree of prematurity

outcome assessment neurodevelopment ahw = anterior horn width ap = anteroposterior bpd = bronchopulmonary dysplasia cat = capute cognitive adaptive test clams = capute clinical linguistic auditory milestone scale cp = cerebral palsy dq = developmental quotient hus = head ultrasound ivh = intraventricular hemorrhage mq = motor quotient nec = necrotizing enterocolitis nicu = neonatal icu nnns = nicu network neurobehavioral scale nor = nonoptimal reflexes subscore phh = posthemorrhagic hydrocephalus phvd = posthemorrhagic ventricular dilatation pma = postmenstrual age