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Kaplan-Meier survival analysis plot for 4-year overall survival. A significantly lower 4-year survival rate can be observed in the lower LMR group in patients before PSM (A), patients with normal lymphocyte and monocyte counts (B) and patients after PSM (C). p-value was calculated by log-rank test and indicated in the plot. LMR, lymphocyte-to-monocyte ratio; PSM, propensity score matching.
