Table 3 Associations of extent of mammographic breast density with breast cancer risk in women with atypical hyperplasia

Overall

69

12

3.53

3.40 (1.76, 5.93)

231

41

11.77

3.48 (2.50, 4.73)

170

29

8.92

3.25 (2.18, 4.67)

0.96

 PPAT

60

11

3.16

3.48 (1.74, 6.23)

91

17

5.39

3.15 (1.84, 5.05)

131

24

7.33

3.28 (2.10, 4.87)

0.97

 BIRADS

9

1

0.37

2.73 (0.07, 15.13)

140

24

6.37

3.77 (2.41, 5.60)

39

5

1.59

3.14 (1.02, 7.31)

0.89

  < 45

7

2

0.30

6.61 (0.80, 23.79)

15

2

0.32

6.17 (0.75, 22.21)

32

4

1.20

3.33 (0.91, 8.53)

0.66

 45-55

9

0

0.39

NA

76

15

3.64

4.12 (2.31, 6.80)

67

14

3.65

3.84 (2.10, 6.44)

0.21

 55+

53

10

2.84

3.53 (1.69, 6.49)

140

24

7.80

3.08 (1.97, 4.58)

71

11

4.07

2.70 (1.35, 4.84)

0.83

 1

47

6

2.73

2.20 (0.81, 4.79)

126

19

6.80

2.79 (1.68, 4.36)

96

16

4.76

3.36 (1.92, 5.46)

0.65

 2

15

4

0.52

7.73 (2.11, 19.81)

61

14

2.81

4.98 (2.72, 8.36)

42

6

2.42

2.48 (0.91, 5.40)

0.16

 3+

7

2

0.29

6.98 (0.84, 25.13)

44

8

2.15

3.72 (1.61, 7.32)

32

7

1.74

4.03 (1.62, 8.29)

0.76

 ADH

41

7

2.18

3.21 (1.29, 6.61)

116

17

5.74

2.96 (1.73, 4.75)

65

15

3.48

4.31 (2.41, 7.11)

0.57

 ALH

27

5

1.28

3.92 (1.27, 9.12)

96

20

5.14

3.89 (2.38, 6.01)

96

13

4.92

2.64 (1.40, 4.52)

0.51

 ADH and ALH

1

0

0.08

NA

19

4

0.89

4.48 (1.22, 11.48)

9

1

0.51

1.94 (0.05, 10.79)

0.56

  < 25

25

2

1.45

1.38 (0.17, 4.97)

78

18

3.96

4.55 (2.69, 7.19)

101

17

5.17

3.29 (1.91, 5.27)

0.16

 25-29

19

5

1.01

4.96 (1.61, 11.55)

70

10

3.37

2.97 (1.42, 5.46)

35

4

1.95

2.05 (0.56, 5.25)

0.42

 30+

24

5

1.07

4.66 (1.51, 10.86)

81

13

4.39

2.96 (1.57, 5.07)

32

7

1.76

3.97 (1.60, 8.17)

0.65