Table 2.

Results of multivariate logistic regression analysis.

Variables	Odds ratio (OR)	95% Confidence interval (CI)	P value
Age at diagnosis
<50 years	1.081	1.022-1.141	0.006
KPS score
≥70	22.354	2.028-246.449	0.011
Cystic change
Yes	3.791	1.082-13.275	0.037
Extent of resection
GTR	18.731	4.636-75.690	<0.001
MGMT promotor
Methylation	5.553	1.591-19.379	0.007
IDH
Mutation	4.321	1.007-18.535	0.049

KPS, Karnofsky performance scale; GTR, gross-total resection; MGMT, O⁶-methylguanine-DNA-methyltransferase; IDH, isocitrate dehydrogenase.