Gross motor milestones in preterm infants: Correction for degree of prematurity M a r i l e e C. A l l e n , MD, a n d G r e g R. A l e x a n d e r , MPH, ScD From the Eudowood Neonatal Pulmonary Division, Johns Hopkins Hospital and Kennedy Institute for Handicapped Children; and the Department of Maternal and Child Health, School of Public Health and Hygiene, Johns Hopkins University, Baltimore, Maryland

The a g e of gross motor milestone attainment and how it is affected by degree of prematurity at delivery were studied in 400 high-risk, preterm (