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Table 3 Multivariate analysis for OS

From: Bone Scan Index predicts skeletal-related events in patients with metastatic breast cancer

 

Hazard ratio

95 % CI

P value

BSI

 <1.4

1.0

Ref.

  

1.4

1.24

0.72

2.16

0.436

Age

 <50

1.0

Ref.

  

50

0.91

0.50

1.66

0.768

Metastasis site

 Bone only

1.0

Ref.

  

 Brain

6.91

0.75

63.8

0.089

 Liver

1.58

0.66

3.80

0.308

 Lung

1.21

0.39

3.69

0.741

PS

 0

1.0

Ref.

  

 1

1.42

0.79

2.57

0.241

 2

4.09

1.41

11.9

0.010

Intrinsic subtype

 Luminal

1.0

Ref.

  

 Luminal HER2

1.48

0.77

2.86

0.244

 HER2

2.10

0.82

5.37

0.122

 Triple negative

2.94

1.22

7.09

0.016