Ischaki 2019.

Methods	RCT, parallel‐group design
Participants	Total number of participants: 27 Inclusion criteria: AECOPD and acute or acute on chronic hypercapnic respiratory failure; indication for NIV Exclusion criteria: none reported
Interventions	Intervention: HFNC Comparator: NIV
Outcomes	All outcomes reported: treatment failure; changes in respiratory variables; patient comfort; presence of pulmonary and extrapulmonary complications Outcomes relevant to this review: treatment failure; changes in respiratory variables; patient comfort; presence of pulmonary and extrapulmonary complications
Notes	Contact: Eleni Ischaki, eischaki@yahoo.gr This was an interim conference abstract after enrolment of 27/498 participants. We are awaiting publication of the full report in order to assess eligibility, collect sufficient study characteristics, and include data in the review.