CEACAM5 and non-small cell lung carcinoma: Univariate analysis showed that gender (P=0.009), smoking (P=0.232), histopathological type (P=0.002), stage (P=0.010), differentiation (P=0.002), lymphovascular invasion (P=0.015), CEA (P ≤ 0.001), CYFRA211 (P=0.003), and RDW-SD (P ≤ 0.001), and LDH (P=0.005) were all correlated with PFS of stage I NSCLC.