Cumulative effect of evidence-based practices on outcomes of preterm infants born at <29 weeks' gestational age.

Background: Extremely preterm infants born at <29 weeks' gestational age are at high risk of death or severe neurological injury. Several individual evidence-based practices have been associated with neuroprotection.

Objective: The objective of the study was to investigate the cumulative effect of 4 evidence-based practices and their association with death and/or severe neurological injury among infants born at <29 weeks' gestational age.