Table 2.

Predictors of progression-free survival and overall survival on multivariate analysis in patients with low-grade gliomas^a

Parameters	PFS			OS
	Risk ratio	95% CI	p-value	Risk ratio	95% CI	p-value
HLA-E expression	1.717	1.088–2.710	0.020	1.778	1.080–2.926	0.024
Age	1.065	1.023–1.109	0.002	1.072	1.022–1.125	0.005
Sex (male)	0.909	0.452–1.839	0.790	1.484	0.681–3.233	0.321
KPS	0.899	0.862–0.938	<  0.001	0.906	0.866–0.947	<  0.001
Side (Left)	0.899	0.452–1.788	0.761	1.317	0.608–2.853	0.486

PFS Progression-free survival, OS overall survival, LGG low-grade glioma, CI confidence interval, KPS Karnofsky performance score

^a Results of Cox regression analysis