Fig. 2

Forest plot for meta-analysis. A. neutrophil-to-lymphocyte ratio (NLR) was treated as a continuous variable in the forest plot depicting the association between NLR and short-term mortality in patients with acute respiratory distress syndrome (ARDS); B. NLR was treated as a categorized variable in the forest plot depicting the association between neutrophil-to-lymphocyte ratio and short-term mortality in patients with ARDS