Table 2.

Results of multivariable Cox proportional hazards model analysis

Parameters	B	SE	Wald	P	HR (95% CI)
Staining intensity
+					Comparison
++	0.531	0.305	3.031	0.082	1.70 (0.94-3.09)
+++	1.354	0.479	7.958	0.005	3.8 (1.51-9.90)
CD34 (+)	0.704	0.203	12.00	0.001	2.02 (1.36-3.01)
Neural invasion	0.936	0.244	14.754	0.000	2.55 (1.58-4.11)
Differentiation
Low					Comparison
Middle	-4.392	0.799	30.193	0.000	0.12 (0.003-0.059)
High	-6.911	0.872	62.860	0.000	0.001 (0.000-0.006)