Fig. 1From: Salvage surgery for advanced non-small cell lung cancer following previous immunotherapy: a retrospective studyComparison of NLR at the time of diagnosis and before salvage surgery. The mean NLR at the time of diagnosis and before salvage surgery was 3.75 (95% confidence interval, 2.60–5.16) and 1.16 (95% confidence interval, 0.88–1.50), respectively (p < 0.001). NLR, neutrophil-to-lymphocyte ratioBack to article page