ALB and acute respiratory distress syndrome: In predicting PFS, the C-index values for ALI, albumin, BMI, NLR, PLR, PAR, LMR, PNI, and SII were 0.621, 0.554, 0.572, 0.561, 0.555, 0.536, 0.561, 0.570, and 0.540, respectively.