Frequencies observed

 

T1=1

T1=0

 

 

T2=1

T2=0

T2=1

T2=0

Total

D = 1

786

29

183

25

1023

D = 0

69

46

176

151

442

Total

855

75

359

176

1465

Comparison of the two weighted kappa coefficients

 

H0:k1(c)= k2(c)

c

 

 

z

p-value

0.1

0.57

0.35

6.35

<10-8

0.2

0.55

0.37

5.38

<10-6

0.3

0.54

0.39

4.26

<10-8

0.4

0.52

0.42

3.04

0.0023

0.5

0.51

0.45

1.77

0.0767

0.6

0.49

0.48

0.31

0.7566

0.7

0.48

0.52

1.24

0.2150

0.8

0.47

0.57

2.92

0.0035

0.9

0.45

0.62

4.71

<10-4

Table 6: Data from the study by Weiner et al and results obtained comparing the weighted kappa coefficients.