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Table 1 Patient characteristics

From: Prognostic and predictive value of clinical and biochemical factors in breast cancer patients with bone metastases receiving "metronomic" zoledronic acid

  

Metronomic arm

Conventional arm

P

  

No

%

No

%

 

Median age (range)

 

46 (35-73)

51 (33-73)

0.1040

ER status

+

22

73.3

18

60.0

0.3950

 

-

7

23.3

11

36.6

 

Her-2 status

+

3

10.0

4

13.3

1.0000

 

-

22

73.3

24

80.0

 

Primary tumor

T1, T2

26

86.7

30

100.0

0.1120

 

T3, T4

4

13.3

0

0

 

Disease free interval*

>2 years

23

76.7

20

66.7

0.5670

 

≤ 2 years

7

23.3

10

33.3

 

Lymph node

0 ≤ N ≤ 3

25

83.3

22

73.3

0.5320

 

N>3

5

16.7

8

26.7

 

Previous radiotherapy

yes

18

60.0

20

66.7

0.7890

 

no

12

40.0

10

33.3

 

Primary histology

IDC

29

96.7

28

93.3

1.0000

 

ILC

1

3.3

2

6.7

 

Grade

1

9

30.0

6

20.0

0.7180

 

2

14

46.7

16

53.3

 
 

3

4

13.3

3

10.0

 

Menopausal

pre

17

56.7

14

46.7

0.6060

 

post

13

43.3

16

53.3

 

Previous chemotherapy regimen

≤ 2

26

86.7

22

73.3

0.3330

 

>2

4

13.3

8

26.7

 

Bone metastasis sites

1

11

36.7

9

30.0

0.7850

 

≥ 2

19

63.3

21

70.0

 
  1. * Disease free interval = date from surgery to first recurrence