Table 1 Univariate analysis of different factors that could affect level of MMP-9 expression

Grades

Grade I

Reference

Grade II

1.74

0.82-3.73

0.15

Grade III

2.61

1.36-5.08

< 0.001

Molecular subtypes

Luminal A

Reference

Luminal B

0.51

0.26-0.99

0.05

HER2-positive

8.01

3.85-18.46

0.001

Triple-negative

3.90

2.48-6.19

0.001

Metastasis (No)

Reference

Metastasis (Yes)

2.17

1.48-3.23

0.001