ALB and acute respiratory distress syndrome: The predictive value of ALI (AUC = 0.708, 95% CI 0.630–0.786, P < 0.001) for all-cause mortality was superior to albumin (AUC = 0.644, 95% CI 0.556–0.726, P < 0.001), body mass index (AUC = 0.581, 95% CI 0.496–0.659, P = 0.069) and neutrophil-to-lymphocyte ratio (AUC = 0.675, 95% CI 0.596–0.754, P < 0.001).