Table 2.

Relationship between SIRI and clinical variables

Clinical variables		Original cohort			PSM cohort
		SIRI < 1.26 (n = 177)	SIRI ≥ 1.26 (n = 114)	p value	SIRI < 1.26 (n = 98)	SIRI ≥ 1.26 (n = 98)	p value
Age at diagnosis	< 55	94	55	0.933	50	46	0.988
	≥ 55	83	59	–	48	52	–
Gender	Male	96	90	< 0.001	73	74	0.177
	Female	81	24	–	25	24	–
Preoperative seizure	Yes	25	15	0.83	15	13	0.974
	No	152	99	–	83	85	–
KPS	≤ 80	103	80	0.396	59	64	0.959
	> 80	74	34	–	39	34	–
Hemisphere	Right	74	58	0.11	43	46	0.465
	Left	94	50		51	47	–
	Midline or bilateral	9	6	–	4	5	–
Tumor location	Frontal lobe	70	28	0.088	32	28	0.136
	Temporal lobe	29	30	–	16	27	–
	Parietal lobe	20	6	–	12	6	–
	Occipital lobe	6	2	–	1	2	–
	Insular lobe	7	5	–	5	5	–
	Other regions	45	43	–	32	30	–
Ki-67 index	< 30%	105	65	0.636	63	56	0.217
	≥ 30%	72	49	–	35	42	–
IDH-1 status	Mutant	29	13	0.531	15	12	0.491
	Wildtype	148	101	–	83	86	–

Significant findings are expressed in bold and italic

Abbreviations: KPS Karnofsky performance status, IDH-1 isocitrate dehydrogenase-1, SIRI systemic inflammation response index, NLR neutrophil to lymphocyte ratio, PSM propensity score matching