Table 3. Patient characteristics based on preoperative complete blood cell count-derived inflammatory biomarkers.

Variables	SII			NLR			PLR			MLR
	Low (n = 84)	High (n = 227)	p	Low (n = 74)	High (n = 237)	p	Low (n = 214)	High (n = 97)	p	Low (n = 137)	High (n = 161)	p
Age			0.6863			0.2579			0.1820			0.0569
>65	55	143		43	155		131	67		79	110
≤65	29	84		31	82		83	30		58	51
Sex			0.5075			0.9243			0.9937			<0.0001
Male	45	112		37	120		108	49		53	99
Female	39	115		37	117		106	48		84	62
Smoking status			0.7810			0.8618			0.5334			0.0307
Cur/for	37	96		31	102		89	44		51	80
Never	47	131		43	135		125	53		86	81
Histology			0.8786			0.7206			0.4183			0.1147
Others	12	34		10	36		34	12		15	28
Ad	72	193		64	201		180	85		122	133
Procedures			0.6456			0.4545			0.2108			0.2123
Limited	32	93		27	98		81	44		49	69
Lobectomy	52	134		47	139		133	53		88	92
p-T factor			0.7799			0.8665			0.1735			0.5694
T1bc	74	206		67	213		196	84		119	148
T1a	10	21		7	24		18	13		15	13
BVI			0.7396			0.1979			0.4832			0.5527
Yes	4	13		2	15		13	4		9	8
No	80	214		72	222		201	93		128	153
LVI			0.3412			0.3495			0.6877			0.5204
Yes	10	19		9	20		19	10		14	13
No	74	208		65	217		195	87		123	148
Recurrence			0.0458			0.6976			0.4961			0.0146
Yes	6	36		11	31		27	15		12	30
No	78	191		63	206		187	82		125	131

Ad: adenocarcinoma; BVI: intratumoral blood vessel invasion; Cur/for: current/former smoker; limited: limited resection; LVI: lymphatic vessel invasion; MLR: monocyte–lymphocyte ratio; NLR: neutrophil–lymphocyte ratio; PLR: platelet–lymphocyte ratio; p-T factor: pathological T factor; SII: systemic immune inflammation index