Table 2.

The risk factors related with the overall and disease specific survival

Variables	Overall Survival		Disease Specific Survival
	P value	HR(95% CI)	P value	HR(95% CI)
Age (years)	0.483	1.012 (0.978 to 1.047)	0.062	1.053 (0.899 to 1.111)
Stage(T2-T4 vs Ta,T1)	0.019	2.048 (1.637 to 3.493)	0.005	3.226 (1.426 to 7.297)
Lymph node(N1 vs N0)	< 0.001	9.417 (2.849 to 18.461)	0.003	4.860 (1.718 to 13.751)
Grade (high vs low)	0.014	2.041 (1.159 to 3.597)	0.027	2.745 (1.123 to 6.712)
AAN (yes vs no)	0.020	2.370 (1.428 to 4.902)	0.020	3.061 (1.190 to 7.872)