Fig. 1

a A receiver operating characteristic curve analysis of the C-reactive protein to albumin (CRP/ALB) ratio in patients with unresectable metastatic colorectal cancer. Area under the curve = 0.655; 95 % confidence interval = 0.539–0.772; p = 0.013. b A receiver operating characteristic curve analysis of the neutrophil to lymphocyte ratio (NLR) in patients with unresectable metastatic colorectal cancer. Area under the curve = 0.701; 95 % confidence interval = 0.582–0.820; p = 0.002