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Table 4 Associations with the presence of prompts in the region of interest (ROI)

From: Variable size computer-aided detection prompts and mammography film reader decisions

Study group Factor Category CAD prompt (n (%)) Average prompt size
    No Yes Mass Calcification
Normal cases Breast density <11% 90 (45) 100 (55) 17 10
   11% to 25% 89 (32) 191 (68) 16 11
   26% to 50% 72 (33) 149 (67) 16 11
   51% to 75% 41 (34) 78 (66) 15 13
   76% or more 14 (34) 27 (66) 16 11
Cancer cases with a prompt in ROI Breast densitya <11% 27 (90) 3 (10) 20 -b
   11% to 25% 45 (71) 18 (29) 18 13
   26% to 50% 66 (54) 57 (46) 17 13
   51% to 75% 42 (56) 33 (44) 19 14
   76% or more 13 (68) 6 (32) 19 15
  Detection statusa Original 1996 screen 5 (6) 80 (94) 18 14
   Interval cancer (1 year) 4 (57) 3 (43) -b 12
   Interval cancer (2 to 3 years) 29 (69) 13 (31) 15 14
  1. aThree cancer cases with a missing prompt location, a further two cases with missing density. bNo observations in this category.