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ROC analysis showing diagnostic accuracy for NLR (A; AUC = 0.58, 95% CI 0.48–0.67), LMR (B; AUC = 0.64, 95% CI 0.55–0.72), and PLR (C; AUC = 0.61, 95% CI 0.52–0.70). LMR showed the best diagnostic accuracy in differentiating glioblastoma from brain metastasis. AUC = area under the curve, LMR = lymphocyte–monocyte ratio, NLR = neutrophil–lymphocyte ratio. PLR = platelet–lymphocyte ratio, ROC = receiver operator characteristic.
