Table 2B. Multivariate cox regression of OS.

	Univariate		Multivariate
	HR (95% CI)	P value	HR (95% CI)	P value
Tumor size (cm)		0.009		0.008
T1	1.000		1.000
T2	4.787 (1.753, 13.074)	0.002	4.855 (1.797, 13.117)	0.002
T3–4	3.508 (0.921, 13.355)	0.066	3.739 (1.081, 12.935)	0.037
ALN status		0.000		0.000
N0	1.000		1.000
N1	2.663 (0.998, 7.105)	0.050	2.611 (1.021, 6.675)	0.045
N2	1.734 (0.507, 5.933)	0.380	1.403 (0.484, 4.073)	0.533
N3	13.878 (4.071, 47.310)	0.000	11.104 (4.119, 29.935)	0.000
Ki-67		0.004		0.003
low	1.000		1.000
high	3.558 (1.488, 8.507)	0.004	3.180 (1.488, 6.793)	0.003