Table 4.

Cox Proportional Hazards Regression Analysis for DFS, PFS and OAS

	DFS	P value	PFS	P value	OAS	P-value
	HR (95% CI)		HR (95% CI)		HR (95% CI)
ER
Negative	Ref.		Ref.		Ref.
Weak	0.53 (0.17-1.69)	0.28	1.72 (0.65-4.60)	0.28	0.64 (0.22-1.87)	0.42
Moderate/strong	0.12 (0.01-1.00)	0.050	0.22 (0.05-1.02)	0.05	0.67 (0.21-2.12)	0.50
PR
Negative	Ref.		Ref.		Ref.
Weak	1.00 (0.23-4.38)	0.99	1.36 (0.45-4.04)	0.58	0.92 (0.32-2.66)	0.88
Moderate/strong	0.16 (0.02-1.60)	0.12	0.22 (0.04-1.14)	0.07	0.72 (0.19-2.68)	0.62

P-value was calculated by the Hazard ratio