Table 5.

Cox analysis for different therapeutic model.

Therapeutic model	HR(95% CI) P
no therapy	[reference]
only surgery	0.339(0.238-0.484)	<0.001
only chemotherapy	0.377(0.275-0.518)	<0.001
only radiation	1.519 (0.878-2.627)	0.13
surgery plus chemotherapy	0.156 (0.111-0.219)	<0.001
surgery plus radiation	0.150(0.0208-1.083)	0.06
chemotherapy plus radiation	0.519(0.338-0.799)	<0.01
trimodality	0.255(0.159-0.407)	<0.001

Statistical significance was set at p<0.05. The bold values mean the significant difference between variables.