Table 3. Relationship of clinicopathologic factors for pCR.

Variabe	pCR (n)	Non-pCR (n)	P value	Hazard ratio	95% CI
Menstrual status
Premenopause	13	30	0.455	0.714	0.294–1.733
Postmenopause	17	28
Age
≤ 35 years	4	9	0.784	0.838	0.235–2.983
> 35years	26	49
BMI
≤ 25	20	34	0.462	1.412	0.562–3.548
> 25	10	24
Laterality
Left	14	36	0.167	0.535	0.219–1.305
Right	16	22
Family history
Yes	3	3	0.406	2.037	0.385–10.770
No	27	55
Cycles
< 4	4	8	0.952	0.962	0.265–3.494
≥ 4	26	50
HR status
Negative	22	22	0.002	4.500	1.710–11.841
Positive	8	36
Ki-67
High (> 30%)	19	20	0.013	3.282	1.309–80227
Low (≤ 30%)	11	38
T stage
T1–2	24	49	0.596	0.735	0.234–2.303
T3–4	6	9

pCR: pathologic complete response; BMI: body mass index; HR: hormone receptor; T: tumor; CI: confidence interval.