Fig. 1

Overall survival of the total study population according to (a) the neutrophil-to-lymphocyte ratio in serum (sNLR), (b) the neutrophil-to-lymphocyte ratio in malignant pleural effusion (mNLR), and (c) the new score that encompasses the neutrophil-to-lymphocyte ratios in the serum and malignant pleural effusion (smNLR score)