Fig. 4

K-M survival curves, stratified by ARDS class and glucocorticoid treatment. Kaplan-Meier survival curves for patients with ARDS at 28 days, with class 2 patients having significantly lower survival than class 1 in panel A (P < 0.0001). panel B, stratified by ARDS class and treatment (glucocorticoid use versus no use). Curves were compared using the log-rank test. Overall p < 0.003; p < 0.0005 for class 2 patients treated with glucocorticoids versus not treated with glucocorticoids; p = 0.301 for hormone exposure in class 1 versus not