Acronym	Definition
BPD	Bronchopulmonary dysplasia
CNN	Canadian Neonatal Network
CI	Confidence interval
CPAP	Continuous positive airway pressure
GA	Gestational age
IUGR	Intrauterine Growth Restriction
IVH	Intraventricular hemorrhage
MOM	Mother’s own milk
NEC	Necrotizing enterocolitis
NICU	Neonatal intensive care unit
PDA	Patent ductus arteriosus
RDS	Respiratory distress syndrome
ROP	Retinopathy of prematurity
RR	Relative risk
SNAP-II	Score for Neonatal Acute Physiology II
SD	Standard deviation
FSO	Swiss Federal Statistical Office