Table 4. Multivariate logistic regression analysis for breast response.

Clinicopathological factors	Estimate	SE	Wald	P value	OR (95% CI)
cT
T1					Ref.
T2	‒1.1841	0.3244	13.3258	0.0003***	0.306 (0.162–0.578)
T3	‒1.7059	0.4165	16.772	<0.0001***	0.182 (0.080–0.411)
cN
N0					Ref.
N1	‒1.077	0.238	20.4691	<0.0001***	0.341 (0.214–0.543)
N2–3	‒1.0305	0.3829	7.2446	0.0071**	0.357 (0.168–0.756)
Histological grade
I					Ref.
II	‒1.6924	0.8243	0.8243	0.0400*	0.184 (0.037–0.926)
III	‒1.5579	0.966	2.6009	0.1068	0.211 (0.032–1.399)
Unknown	1.862	0.771	5.8328	0.0157*	6.437 (1.420–29.170)
PR status
Negative					Ref.
Positive	-0.9769	0.2555	14.6251	0.0001***	0.376 (0.228–0.621)
Ki67 expression
Low					Ref.
High	0.6456	0.3017	4.5789	0.0324*	1.907 (1.056–3.445)
HER2
Negative					Ref.
Positive	0.0127	0.2449	0.0027	0.9585	1.013 (0.627–1.637)
Unknown	0.9531	0.3043	9.8075	0.0017**	2.594 (1.428–4.710)

*, P<0.05; **, P<0.01; ***, P<0.001. SE, standard error; OR, odds ratio; CI, confidence interval; PR, progesterone receptor; HER2, human epidermal growth factor receptor 2.