METHODS	Randomization procedure:
	Allocation:
	Blinding:
	Duration:
	Design:
	Multicentre:
	Analysis (ITT):
	Informed consent:
PARTICIPANTS	N:
	Setting:
	Age:	O:	C:		B:
	Gender:	O:	C:		B:
	Diagnostic criteria:
	History:
	Excluded:
NOTES
INTERVENTIONS                     OUTCOMES	Intervention:	(   ) CPAP     (   ) bilevel NPPV     (   ) Other
	PEEP level:	C:		B:
	PS level:	B:
	N:	C:		B:
	Time:	C:		B:
	Co‐intervention:
	Control group:	(   ) O2     (   ) Co‐intervention     (   ) Other
	N:
	Mask:	(   ) oro‐nasal    (   ) nasal     (   ) total face  (   ) other
	Mortality:	O:	C:		B:
	Tracheal intubation rate:	O:	C:		B:
	ICU length of stay:	O:	C:		B:
	Hospital length of stay:	O:	C:		B:
	Treatment failure:	O:	C:		B:
	Adverse effects:	O:	C:		B:
	Patient compliance :	O:	C:		B:
	Drop‐outs / withdrawals:	O:	C:		B:
Notes