TABLE 2 Cross-Tabulation of FISH Score by Antibody Staining for Each Observer

From: HER-2/neu in Breast Cancer: Interobserver Variability and Performance of Immunohistochemistry with 4 Antibodies Compared with Fluorescent In Situ Hybridization

Fish Score

≤1

1–2

2–4

>4

Total

A485

     

 Observer 1

     

0

12

25

1

0

38

1

4

9

1

1

15

2

0

2

3

7

12

3

1

1

10

18

30

 Observer 2

     

0

13

28

1

2

44

1

3

5

2

5

15

2

0

4

5

6

15

3

1

0

7

13

21

 Observer 3

     

0

14

29

1

2

46

1

3

6

1

5

15

2

0

2

3

3

8

3

0

0

10

16

26

 Total

17

37

15

26

95

 T250

     

 Observer 1

     

0

15

19

0

0

34

1

2

10

3

0

15

2

0

6

2

2

10

3

0

2

10

24

36

 Observer 2

     

0

15

19

0

0

34

1

2

11

0

0

13

2

0

4

4

1

9

3

0

3

11

25

39

 Observer 3

     

0

13

16

0

0

29

1

4

13

0

0

17

2

0

6

4

1

11

3

0

2

11

25

38

 Total

17

37

15

26

95

CB11

     

 Observer 1

     

0

16

35

6

2

59

1

1

0

0

2

3

2

0

1

4

7

12

3

0

1

5

15

21

 Observer 2

     

0

15

35

5

3

58

1

2

0

2

2

6

2

0

1

3

5

9

3

0

1

5

16

22

 Observer 3

     

0

16

33

2

2

53

1

1

2

4

3

10

2

0

1

4

4

9

3

0

1

5

17

23

 Total

17

37

15

26

95

HERC

     

 Observer 1

     

0

13

25

0

1

39

1

3

4

3

0

10

2

0

5

0

5

10

3

1

3

12

20

36

 Observer 2

     

0

13

27

1

1

42

1

2

4

2

3

11

2

1

3

2

4

10

3

1

3

10

18

32

 Observer 3

     

0

13

25

2

1

41

1

2

5

1

6

14

2

2

4

1

6

13

3

0

3

11

13

27

 Total

17

37

15

26

95