A combination of mild-moderate hypoxemia and low compliance is highly prevalent in persistent ARDS: a retrospective study.

"Declarations Ethics approval and consent to participateThis research was conducted in accordance with the Declaration of Helsinki. With regard to the ARDSNet cohort, because data would be received in de-identified form, the Institutional Review Board of Evangelismos Hospital waived the need for informed consent and approved the study. With regard to the CARDS cohort, the Institutional Review Board at each participating study site (Ioannina: University Hospital of Ioannina, and Crete: University Hospital of Heraklion) approved of the data collection and waived the need for informed consent owing to the observational study design and the collection of de-identified data. Consent for publicationNot applicable. Competing interestsThe authors declare that they have no competing interests. IIS serves as Associate Editor for the Journal. Competing interests The authors declare that they have no competing interests. IIS serves as Associate Editor for the Journal."

"Funding This study was supported by a grant to IIS from the Hellenic Foundation for Research and Innovation (H.F.R.I.) under the “2nd Call for H.F.R.I Research Projects to support Post-Doctoral Researchers” (Project 80 − 1/15.10.2020)."