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

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 density^a

<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 status^a

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