Fig. 1
From: Systemic hypoferremia and severity of hypoxemic respiratory failure in COVID-19
Associations between markers of iron status, lymphocyte count and severity of hypoxemia. a Boxplots show the 25th, 50th and 75th percentiles (box); 10th and 90th percentiles (whiskers); and data points (circles) of serum iron, transferrin saturation (Tsat) and serum ferritin, stratified by severity of hypoxemia. b Receiver operating characteristic (ROC) curve and Youden Index for serum iron in distinguishing severe and non-severe hypoxemia. c Correlation serum iron and PaO2/FiO2 ratio. d Correlation between serum iron and lymphocyte count