Table 5.

Cox regression model for risk factors predicting OS.

Variable	Number of patients	Death	Univariate Analysis		Multivariate Analysis
			HR (95% CI)	P value	HR (95% CI)	P value
Overall	62	19 (30.6)
Age
Age ≤ 30	28	5 (17.9)	Reference		Reference
Age>30	34	14 (41.2)	3.946 (1.378-11.306)	0.011*	3.568 (1.190-10.694)	0.023*
Sex
Female	33	9 (27.3)	Reference
Male	29	10 (34.5)	1.762 (0.710-4.370)	0.222
Primary
Yes	52	13 (25)	Reference		Reference
No	10	6 (60)	4.494 (1.589-12.708)	0.005*	7.567 (2.221-25.781)	0.001*
Location
Others	30	7 (23.3)	Reference
Temporal	32	12 (37.5)	1.855 (0.725-4.472)	0.197
GTR
Yes	25	10 (40)	Reference		Reference
No	37	9 (24.3)	2.876 (1.142-7.254)	0.025*	7.963 (2.368-26.776)	0.001*
RT
Yes	14	8 (57.1)	Reference		Reference
No	48	11 (22.9)	2.593 (1.042-6.453)	0.041*	4.490 (1.469-13.726)	0.008*
CT
Yes	24	12 (50)	Reference
No	38	7 (18.4)	2.139 (0.839-5.451)	0.111

*: p< 0.05 was considered statistically significant.