Table 5.

Significant predictors of false-negative axillary ultrasound (false-negative ratio = OR) in 470 patients with breast cancer according to univariate and multivariate logistic regression

	Univariate		Multivariate
	p-value	OR (95% CI)	p-value
Tumour stage
T1	0,004	1.55 (1.17-2.04)	n.s.
T2-4		1
Grading
G1/2	0.003	1.61 (1.16-2.24)	n.s.
G3		1
Lymphangiosis
No	0.001	1.72 (1.33-2.22)	n.s.
Yes		1
ER status
Positive	0.024	1.63 (1.03-2.59)	n.s.
Negative		1
PR status
Positive	0.014	1.54 (1.08-2.22)	n.s.
Negative		1
HER2 status
Negative	0.007	2.99 (1.067-8.36)	n.s.
Positive		1
Ki-67
≤14%	<0.001	1.76 (1.34-2.30)	n.s.
>14%		1
Size of nodal metastasis
≤10 mm	<0.001	2.66 (1.81-3.91)	0,001
>10 mm		1
Nodal stage
N1	<0.001	1.96 (1.41-2.73)	n.s.
N2-3		1
Capsular infiltration
No	<0.001	2.22 (1.59-3.11)	n.s.
Yes		1

OR = Odds ratio; CI = confidence interval; n.s. = not significant.