Table 2
Interobserver agreement for three categories: κ values
Cytology
Necrosis
Van Nuys
kappa
κu
κw
κu
κw
κu
κw
κu, unweighted κ; κw, weighted κ.
Overall
0.36
0.47
0.47
0.57
0.4
0.48
Specialists
0.36
0.46
0.43
0.53
0.39
0.48
Non-specialists
0.38
0.49
0.51
0.61
0.44
0.51