Dumas 2011.

Methods	This is a prospective, unmasked, randomized controlled clinical trial to assess efficacy of NHFPV compared to NCPAP.
Participants	46 infants born by caesarian section ≥ 37 GA, ≥ 2000 g with diagnosis of TTN and with a transcutaneous saturation < 90% at 20 m after birth were eligible. 3 infants in each group were excluded before receiving the allocated intervention.
Interventions	Infants were randomized to either NHFPV or NCPAP.
Outcomes	The primary endpoint was the duration of respiratory distress. Secondary endpoints were the duration and level of oxygen supplementation, and the incidence of pneumothorax, and pulmonary infections.
Notes
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Low risk	Newborns were assigned using a table of random numbers.
Allocation concealment (selection bias)	Low risk	Sealed opaque envelopes were used.
Blinding of participants and personnel (performance bias) All outcomes	High risk	The assigned intervention could not be blinded.
Blinding of outcome assessment (detection bias) All outcomes	Unclear risk	No information provided.
Incomplete outcome data (attrition bias) All outcomes	Low risk	All outcomes accounted for.
Selective reporting (reporting bias)	Low risk	The protocol was registered in ClinicalTrials.gov (NCT00556738 ).
Other bias	Low risk	Appears free of other bias.