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Table 7 Number of cases and percentage agreement between National Health Service Breast Screening Programme and Office for National Statistics in relation to invasive ductal carcinoma, ductal carcinoma in situ and other invasive and non-invasive 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 assigned histology code
  Invasive ductal carcinoma Ductal carcinoma in situ
ONS histology     
   Invasive ductal carcinoma 3,017 88% 101 8%
   Other specified invasive histology 167 5% 8 <1%
   Other non-specified invasive histology 224 6% 31 3%
   Ductal carcinoma in situ 30 <1% 976 82%
   Other specified non-invasive histology 1 <1% 30 3%
   Other non-specified non-invasive histology 3 <1% 45 4%
Total 3,442 100% 1,191 100%
  1. NHSBSP, National Health Service Breast Screening Programme; ONS, Office for National Statistics.