Table 1. Correlation between peripheral NLR/PLR and clinical variables of SCLC patients.

Variables	cases	NLR		P	PLR		P
		< 2.65	≥ 2.65		< 125	≥ 125
Age (years)
< 55	113	41	72		53	60
≥ 55	207	82	125	0.558	106	101	0.462
gender
male	239	90	149		129	110
female	81	33	48	0.622	30	51	0.008
Smoking history
no	105	47	58		43	62
yes	215	76	139	0.104	116	99	0.029
Clinical stage
LS	122	61	61		68	54
ES	198	62	136	0.001	91	107	0.089
Performance status (PS)
0	104	52	52		55	49
≥ 1	216	71	145	0.003	104	112	0.427
LDH
< 210	169	90	79		101	68
≥ 210	151	33	118	< 0.001	58	93	< 0.001
surgery
no	293	105	188		143	150
yes	27	18	9	0.002	16	11	0.299
Thoracic radiotherapy (RT)
no	185	59	126		82	103
yes	135	64	71	0.005	77	58	0.025
Prophylactic cranial irradiation (PCI)
no	243	88	155		117	126
yes	77	35	42	0.146	42	35	0.328