Frequencies observed

 

T=1

T =0

Total

D=1

473

81

554

D=0

22

44

66

Total

495

125

620

Estimations of the weighted kappa coefficient

c

95% logit CI

0.1

0.527

(0.408, 0.639)

0.2

0.462

(0.370, 0.584)

0.3

0.412

(0.338, 0.539)

0.4

0.371

(0.310, 0.502)

0.5

0.338

(0.285, 0.471)

0.6

0.310

(0.264, 0.444)

0.7

0.287

(0.245, 0.420)

0.8

0.267

(0.229, 0.399)

0.9

0.249

(0.214, 0.380)

Table 3: Data from the study of Weiner et al and estimations of the weighted kappa coefficient.