Table 4. Univariate analysis of potential factors affecting disease outcomes.

	P-values
Factor tested	Local control	Disease specific survival	Overall survival
T-stage	0.001	0.005	0.001
N-stage	0.423	0.007	0.018
Gender	0.749	0.827	0.734
Site of cancer	0.110	0.549	0.702
Age (<60 vs ⩾60)	0.960	0.724	0.963
Stage (III and IV)	0.531	0.208	0.108