Table 3. Cox multivariate forward stepwise regression analysis to assess the independence and impact of variable factors on patient survival.

Parameter	Disease-specific survival		Recurrence-free survival		Metastasis-free survival
Stage	<0.0005	—	0.10	—	0.003	—
Age	0.87	0.54	0.76	0.96	0.25	0.36
Grade	0.69	0.60	0.12	0.053	0.69	0.81
SF2	0.005	0.003	0.015	0.018	0.009	0.013
Bid Expression	0.077	0.046	0.12	0.079	0.053	0.026

P-values for each factor are given. The left-hand columns give the P-value for each parameter derived from the multivariate analysis. The right-hand columns give P-values for each parameter after allowing for stage.