Table 1

Summary of inter-rater reliability exercise for first half of data collection period, by type of data elements.

Site/Abstractor

Tumor

Treatment

Treatment* w/o HT Date

Recurrence

Comorbidity

Surveillance


A/1

3

6

2

3

2

12

A/2

1

6

3

1

3

19

B/3

3

6

2

7

0

11

B/4

1

9

4

6

4

10

B/5

0

5

1

1

0

15

C/6

0

5

2

0

1

27

C/7

0

3

2

1

5

13

D/8

2

5

3

1

3

15

D/10

5

7

6

0

0

5

D/11

1

7

3

2

1

11

E/12

2

7

5

1

3

8

F/15

8

7

2

0

1

7


#Disagreements

26

73

35

23

23

153

Total in section

420

360

360

360

1140

960

%Disagreement

6%

20%

10%

6%

2%

16%


*Excluding 38 Disagreements on Last Known Date of Hormonal Therapy

Thwin et al. BMC Medical Research Methodology 2007 7:23   doi:10.1186/1471-2288-7-23

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