Table 2. Multivariate analysis of prognostic factors affecting overall survival.

Variable	HR (95% CI)	P value
Lymph node positive	0.482 (0.085–2.722)	0.409
Curative intent surgery	0.412 (0.026–6.605)	0.531
Distant metastasis	7.702 (0.828–71.638)	0.073
WHO grade	1.611 (0.676–3.840)	0.282
ATRX/DAXX protein expression positive	3.809 (1.064–13.630)	0.040