Fig. 2From: Respiratory support in patients with severe COVID-19 in the International Severe Acute Respiratory and Emerging Infection (ISARIC) COVID-19 study: a prospective, multinational, observational studyProbability density of patients' basic demographics (age and sex), according to the first ventilation treatment received. A Complete cohort. B Patients from high-income countries. C Patients from low middle-income countriesBack to article page