Table 3.

Multivariate Cox regression analysis of factors affecting overall survival

Variables in the equation	P-value	Hazard ratio	95% confidence interval
Age
<45 vs ≥45 years	0	0.423	0.272–0.658
Histology
LGG vs HGG	0.033	0.625	0.406–0.962
KPS
<70 vs ≥70	0.003	1.906	1.244–2.921

Abbreviations: LGG, low-grade gliomas; HGG, high-grade gliomas; KPS, Kar nofsky performance score.