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Table 2 Number of screen-detected cancers, interval cancers, false positive examinations and true negative examinations

From: Influence of breast compression pressure on the performance of population-based mammography screening

   Group 1 Group 2 Group 3 Group 4 Group 5
  Total n % n % n % n % n %
Total examinations 132,776 26,490 20.0 26,617 20.0 26,539 20.0 26,549 20.0 26,581 20.0
Screen detected cancers 833 177 21.2 164 19.7 188 22.6 152 18.2 152 18.2
Interval cancers 269 37 13.8 48 17.8 48 17.8 65 24.2 71 26.4
Interval cancers detected within 12 months after the examination 110 19 17.3 15 13.6 13 11.8 26 23.6 37 33.6
False positive examinations 2192 486 22.2 381 17.4 404 18.4 426 19.4 495 22.6
True negative examinations 129,482 25,790 19.9 26,024 20.1 25,899 20.0 25,906 20.0 25,863 20.0
  1. The 12-month interval cancers are included in the interval cancers