Table 1. Patients and clinical characteristics.

Variable		No.	Percent (%)
Gender	male	264	54.9
	female	217	35.1
Age	Mean (range), years	40.79(1-81)
	<40	208	43.2
	≥40	273	56.8
Surgery	GTR	328	68.2
	NTR+STR	153	31.8
Radiotherapy	GK	315	62.5
	CRT	122	25.4
	No	44	9.1
Chemotherapy	Yes	198	41.2
	No	283	58.8
WHO Grade	Grade I-II	294	61.1
	Grade III-IV	187	38.9
Overall Survival	Median follow-up	11 months
	Survival	26	5.4
	Loss to follow-up	17	3.5
	Death	438	91.1
OS rate, %	1 year	31
	2 years	10.3
	3 years	7.5
Progression-free survival	Median follow-up	8 months
	Progression-free	24	5
	Progression	453	94.2
	Total	477	99.2
	Missing System	4	0.8
PFS rate, %	1 year	15.7
	2 years	7.3
	3 years	4.7
	Total Number	481

Abbreviations: GTR: gross-total resection; NTR: near-total resection; STR: sub-total resection;

GK: Gamma Knife; CRT: Conformal Radiotherapy; OS: Overall Survival; PFS: Progression-free Survival.