Table 2

Results of ddCTC detection and statistical analysis

Khi2

Barnet Woolf


Patient cohort characteristics

negative

ddCTC

positive

ddCTC

P

P


Number

37

24


NS

NS


Histology

Invasive ductal carcinoma

28

19


Invasive lobular carcinoma

8

3


Others

1

2


NS

NS


Molecular

Luminal A

32

21


Characteristics

Luminal B

2

1


Triple negative

2

2


Her2 overexpression

1

0


NS

NS


Size tumour

T1

17

12


T2

18

10


T3 and T4

2

2


0.05*

< 0.05*


Lymph node

N+

13

3


status


N-

24

21


NS

NS


Tumor grade

I

8

5


II

22

14


III

5

4


Unknown

2

1


ND

ND


Hormonal

ER+

37

21


status

ER-

0

3


NS

NS


PR+

28

18


PR-

9

6


Values of P for Khi2 and Barnet Woolf tests are indicated for each clinicopathological characteristics of tumors

*significance level: P 0.05, NS: P > 0.05 for alpha risk 5%; ND: not determined

Barrière et al. BMC Cancer 2012 12:114   doi:10.1186/1471-2407-12-114

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