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Table 3 Reproducibility of grading using mitosis (n = 67)

From: Prospective evaluation of Ki-67 system in histological grading of soft tissue sarcomas in the Japan Clinical Oncology Group Study JCOG0304

 

Pathologist 2

Grade 1

Grade 2

Grade 3

Total

Pathologist 1

Grade 1

0

1

0

1

Grade 2

2

30

9

41

Grade 3

0

7

18

25

Total

2

38

27

67

κ = 0.45 (95 % CI 0.26–0.65)

 

Pathologist 3

Pathologist 1

Grade 1

0

1

0

1

Grade 2

2

32

7

41

Grade 3

0

8

17

25

Total

2

41

24

67

κ = 0.47 (95 % CI 0.27–0.67)

 

Pathologist 3

Pathologist 2

Grade 1

1

1

0

2

Grade 2

1

30

7

38

Grade 3

0

10

17

27

Total

2

41

24

67

κ = 0.47 (95 % CI 0.26–0.67)