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Table 4 Agreement of invasive and non-invasive cancer histologies in the regional cancer registries of England in participants of the Million Women Study

From: Breast cancer histological classification: agreement between the Office for National Statistics and the National Health Service Breast Screening Programme

Region Number of casesa Percentage agreement κ value
A 1,830 0.96 0.87
B 737 0.97 0.91
C 691 0.97 0.92
D 490 0.95 0.82
E 486 0.94 0.85
F 485 0.96 0.89
G 410 0.98 0.93
H 389 0.97 0.94
I 189 0.97 0.86
J 180 0.88 0.66
  1. aVariation in the number of cases is a reflection of the variation in the number of participating breast cancer screening centres within each region.