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Table 2 Multivariate analysis of clinicopathological factors for nSLN metastasis

From: Risk factors of non-sentinel lymph node metastasis in breast cancer with 1–2 sentinel lymph node macrometastases underwent total mastectomy: a case-control study

Characteristic

OR

95% CI

P value

TS (mm)

1.051

1.019–1.084

0.002

Ratio of SLN macrometastases

12.597

4.302–36.890

0.0001

Tumor sites

  

0.054

 Upper outer

1

 

Reference

 Lower outer

0.777

0.344–1.754

0.544

 Lower inner

0.255

0.066–0.980

0.047

 Upper inner

0.405

0.193–0.853

0.017

 Central portion

0.468

0.159–1.377

0.168