ALB and acute respiratory distress syndrome: The ROC curves showed that the AUCs for the baseline ALI, ALB, NLR and BMI for the prediction of all-cause mortality were 0.708 (95% CI 0.630–0.786, P < 0.001), 0.644 (95% CI 0.556–0.726, P < 0.001), 0.675 (95% CI 0.596–0.754, P < 0.001) and 0.581 (95% CI 0.469–0.659, P = 0.069), respectively.