Performance of oxygenation indices and risk scores to predict invasive mechanical ventilation and mortality in COVID-19.

"Declarations Ethics approval and consent to participateThe study was conducted in accordance with the principles of the current Helsinki Declaration, as well as local, regional, and international regulations pertaining to clinical research, including Colombian Law on Biomedical Research. Ethical approval was obtained from the Medical Ethics Committee of the Clínica Universidad de La Sabana (approval number 20220602). Prior to participating in the study, all participants provided written informed consent, and the confidentiality of their data was strictly maintained throughout the study. Consent for publicationNot applicable. Competing interestsThe authors declare no competing interests. Competing interests The authors declare no competing interests."

"Funding This work was supported by Universidad de la Sabana Grant MEDMSc-63-2023."