Table 4. Results of the Cox regression model—regression coefficient $\widehat{\beta }$, standard error se $\widehat{\beta }$, Z-statistics, p-value (Statistically significant p-values are highlighted in bold.), hazard ratio $exp\left(\widehat{\beta }\right)$ and Wald 95% empirical confidence interval characterized by its lower and upper bounds (LB, resp. UB).

	$\widehat{\beta }$	se $\widehat{\beta }$	Z-stat	p-value	$exp\left(\widehat{\beta }\right)$	95% LB	95% UB
Age (years)	0.072	0.018	4.048	≪ 0.001	1.075	1.038	1.113
GTV (cm3)	0.081	0.026	3.116	0.002	1.084	1.030	1.140
Sex
male	−2.438	1.917	−1.272	0.203	0.087	0.002	3.737
Diagnosis
LG glioma	5.824	1.298	4.486	≪ 0.001	338.311	26.562	4308.994
HG glioma	5.179	0.954	5.432	≪ 0.001	177.544	27.394	1150.701
other	2.359	1.075	2.194	0.028	10.581	1.286	87.021
Karnofsky index
KI<80	1.001	0.464	2.155	0.031	2.720	1.095	6.758
Location
supratentorial	−1.521	1.027	−1.480	0.139	0.219	0.029	1.637
Sex:Diagnosis
male:LG glioma	−4.096	1.327	−3.087	0.002	0.017	0.001	0.224
male:HG glioma	−2.029	0.929	−2.185	0.029	0.131	0.021	0.811
male:other	−0.493	1.615	−0.305	0.760	0.611	0.026	14.465
Sex:Location
sex:supratentorial	4.761	1.902	2.503	0.012	116.881	2.808	4864.614