Table 3 Factors associated with sentinel node status

Age (increase of 10 years)

0.98 (0.79–1.22)

0.880

0.93 (0.74–1.18)

0.552

Menopausal status (pre vs. post)

1.23 (0.68–2.20)

0.495

1.28 (0.68–2.42)

0.450

Number of excised sentinel nodes (continuous variable)

1.06 (0.81–1.39)

0.656

1.08 (0.80–1.44)

0.627

Histology

 Ductal (reference)

1

0.127

1

0.205

 Lobular

1.02 (0.51–2.03)

1.06 (0.52–2.14)

 Mixed

1.45 (0.76–2.77)

1.24 (0.63–2.46)

 Others

0.30 (0.09–1.01)

0.13 (0.02–0.98)

 Tumor size (increase of 10 mm)

1.56 (1.14–2.13)

0.005

1.20 (0.86–1.68)

0.289

1.71 (1.19–2.45)

0.004

1.22 (0.84–1.78)

0.307

Subtype

 Luminal A (reference)

1

1

0.215

 Luminal B

1.39 (0.81–2.37)

0.232

1.41 (0.82–2.40)

 HER2

2.16 (0.84–5.57)

0.111

 Triple negative

0.46 (0.13–1.60)

0.222

Histological grade

 Grade 1 (reference)

1

1

1

1

 Grade 2

2.88 (1.28–6.47)

0.010

2.28 (0.99–5.24)

0.054

2.67 (1.18–6.01)

0.018

2.08 (0.89–4.83)

0.089

 Grade 3

2.92 (1.24–6.88)

0.014

1.81 (0.73–4.48)

0.198

3.08 (1.23–7.68)

0.016

2.15 (0.82–5.61)

0.119

Presence of LVI (yes vs. no)

3.81 (2.27–6.37)

<.0001

3.27 (1.89–5.68)

<.0001

4.21 (2.40–7.36)

<.0001

3.47 (1.90–6.33)

<.0001

Presence of extensive DCIS/LCIS (yes vs. no)

1.09 (0.64–1.87)

0.751

1.28 (0.72–2.26)

0.396