Macari 2019.

Methods	RCT, cross‐over design
Participants	Total number of participants: not reported Inclusion criteria: hypoxaemic ARF due to pneumonia; requiring HFNC and/or NIV Exclusion criteria: cardiogenic pulmonary oedema; underlying respiratory disease
Interventions	Intervention group (HFNC) Control group (NIV)
Outcomes	All outcomes measured: global and regional end‐expiratory electrical lung impedance; lung volumes, respiratory parameters; haemodynamic tolerance; dyspnoea; comfort Outcomes relevant to this review: respiratory parameters; dyspnoea; comfort
Notes	Contact: Elise Artaud‐Macari, eliseartaudmacari@yahoo.fr Currently published only as an abstract. We are awaiting publication of the full report in order to assess eligibility, collect sufficient study characteristics, and include data in the review.