Real-world data on breast pathologic complete response and disease-free survival after neoadjuvant chemotherapy for hormone receptor-positive, human epidermal growth factor receptor-2-negative breast cancer: a multicenter, retrospective study in China

Table 4 Cox regression for DFS before and after PSM

Variable	Univariate analysis			Variable	Multivariate analysis
Variable	HR	95% CI	p value	Variable	HR	95% CI	p value
Adjuvant ET	0.226	0.100~0.513	0.000	Adjuvant ET	0.217	0.059~0.801	0.022
ypN stage				cT stage			0.043
0	1[Reference]			1	1[Reference]
1	0.858	0.396~1.857	0.698	2	1.331	0.170~10.389	0.785
2	2.271	1.115~5.625	0.000	3	4.699	0.537~41.142	0.162
3	4.993	2.436~10.230	0.000	Breast pCR	0.228	0.070~0.739	0.014
				Ki67	1.027	1.033~1.052	0.027

ISSN: 1477-7819