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Table 6 Kappa measures of agreement

From: Morphological types of breast cancer in family members and multiple primary tumours: is morphology genetically determined?

   Kappa
Condition n All types Ductal and lobular Ductal, lobular and tubuloductal
1st/2nd invasive     
   Include all 907 0.22 0.23 0.18
   Contralateral breast 653 0.38 0.56 0.47
   <1 year interval 643 0.23 0.19 0.16
   = 1 year interval 264 0.17 0.30 0.24
   Contralateral breast and <1 year interval 416 0.47 0.63 0.54
   Contralateral breast and = 1 year interval 237 0.20 0.40 0.32
In situ/invasive     
   Include all 465 0.01 0.18 0.08
   Contralateral breast 153 0.21 0.21 0.17
   <1 year interval 359 0.06 0.28 0.14
   = 1 year interval 106 0.15 0.25 0.22
   Contralateral breast and <1 year interval 93 0.33 0.27 0.21
   Contralateral breast and = 1 year interval 60 0.02 0.13 0.12