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Table 5 Overall agreement where data allow for coding of 12 site specific histologies 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

  NHSBSP
  Invasive ductal Invasive lobular Invasive tubular Invasive mixed Other specified invasive Invasive mucinous Invasive medullary Ductal carcinoma in situ Lobular carcinoma in situ Other specified non-invasive Ductal + lobular carcinoma in situ Pagets Total
ONS              
   Invasive ductal 3,017 20 46 14 6 4 0 101 1 1 1 0 3,211
   Invasive lobular 32 515 9 19 3 3 0 1 4 0 0 0 586
   Invasive tubular 39 1 280 2 0 0 1 1 0 0 0 0 324
   Invasive mixed 68 19 1 14 2 1 0 1 0 0 0 0 106
   Other specified invasive 21 4 4 0 23 0 0 5 0 0 0 0 57
   Invasive mucinous 3 0 1 3 1 42 1 0 0 0 0 0 51
   Invasive medullary 4 0 0 1 0 2 13 0 0 0 0 0 20
   Ductal carcinoma in situ 30 1 0 0 0 0 1 976 3 3 8 0 1,022
   Lobular carcinoma in situ 0 0 0 0 0 0 0 5 32 0 5 0 42
   Other specified non-invasive 1 0 0 0 0 0 0 18 0 0 0 1 20
   Ducal + lobular carcinoma in situ 0 0 0 0 0 0 0 7 1 0 10 0 18
   Pagets 0 1 0 0 0 0 0 0 0 0 0 0 1
Total 3,215 561 341 53 35 52 16 1,115 41 4 24 1 5,458
Percentage agreement              90%
Kappa statistic       13        0.8
  1. NHSBSP, National Health Service Breast Screening Programme; ONS, Office for National Statistics.