Fig. 2From: Early prone positioning in acute respiratory distress syndrome related to COVID-19: a propensity score analysis from the multicentric cohort COVID-ICU network—the ProneCOVID studya Kaplan–Meier curves according to prone status in ICU at Day-1 before weighting adjustment in complete case population. b Kaplan–Meier curves according to prone status in ICU at Day-1 after weighting adjustment in complete case population. ICU intensive care unitBack to article page