Table 7.

Multivariate analysis of the factors affecting the true-positive/true-negative versus false-positive/false-negative results of axillary metastasis.

	p-value	Coefficient	95% Confidence interval
Mean primary cancer size (cm)	0.04	1.29	1.04–1.60
Age	0.37	1.01	0.98–1.04
ER (negative vs. positive)	0.93	0.97	0.28–3.31
PR (negative vs. positive)	0.99	0.99	0.37–2.92
HER-2 (negative vs. positive)	0.26	1.67	0.73–3.54
Histologic grade
Grade 1	0.09
Grade 2	0.05	0.26	0.04–0.97
Grade 3	0.04	0.17	0.03–0.82
T stage
T1	0.21
T2	0.16	0.56	0.25–1.22
T3	0.83	0.89	0.26–2.97
T4	0.35	2.01	0.50–8.11

ER, estrogen receptor; PR, progesterone receptor.