Bozkurt 2020.

Study characteristics
Methods	Randomised controlled trial
Participants	Preterm infants of birth weight ≤ 1250 g Zekai Tahir Burak Maternity Teaching Hospital, Istanbul, Turkey (2016 to 17)
Interventions	Delayed progressive enteral feeding (minimal enteral nutrition for 5 days after birth, 110 infants) versus earlier progressive enteral feeding (within 48 hours, 109 infants), with feed volumes advanced by 20 to 25 mL/kg/d until 150 mL/kg/d feed volume achieved Infants received expressed maternal milk (first choice) or formula or both
Outcomes	NEC (Bell stage 2/3) Mortality Invasive infection Feeds intolerance Duration of hospital stay
Notes	Mean gestation at birth: 27weeks' Mean birth weight: 963 g Further information courtesy of Dr Ozlem Bozturk (March 2020)
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Low risk	Computer‐generated
Allocation concealment (selection bias)	Low risk	Sequentially‐numbered sealed opaque envelopes
Blinding of participants and personnel (performance bias) All outcomes	High risk	Unmasked
Blinding of outcome assessment (detection bias) All outcomes	High risk	Unmasked
Incomplete outcome data (attrition bias) All outcomes	Low risk	Complete cohort assessed
Selective reporting (reporting bias)	Low risk	Unlikely
Other bias	Low risk	No evidence baseline imbalance