Table 3.

General characteristics and their relationship with lymph node metastasis (K-S test)

Variables	pN0	pN1 + N2	Z	p
C/T ratio	0.65 (0.28, 1.00)	1.00 (1.00, 1.00)	3.082	< 0.001
Serum CEA level (μg/L)	1.90 (1.19, 3.02)	2.83 (1.67, 6.19)	1.851	0.002
NLR	1.63 (1.27, 2.19)	1.79 (1.20, 2.29)	3.082	0.748
PLR	116.14 (92.57, 150.60)	114.45 (82.96, 170.80)	0.677	0.133
LMR	5.11 (3.86, 7.90)	5.03 (3.43, 6.21)	0.984	0.287

pN0: Pathological diagnosis without lymph node metastasis. pN1 + N2: Pathological diagnosis with N1 and/or N2 metastasis. C/T ratio: consolidation size/tumor size ratio. CEA: carcinoembryonic antigen. PLR: platelet-to-lymphocyte ratio. NLR: neutrophil-to-lymphocyte ratio. LMR: lymphocyte-to-monocyte ratio