Table 2 Association of categorical measures of density with cancer risk (all cancers).

From: Quantitative breast density analysis to predict interval and node-positive cancers in pursuit of improved screening protocols: a case–control study

 

Controls

All cancers

 
 

#

%

#

%

OR

95% CI

p-value

FGV (cm3)a

 1st quartile

137

22.6

75

12.5

1

 

p < 0.01

 2nd quartile

114

18.8

98

16.4

1.6

(1.1, 2.3)

 

 3rd quartile

95

15.7

116

19.4

2.3

(1.5, 3.4)

 

 4th quartile

72

11.9

140

23.4

3.7

(2.5, 5.6)

 

 Missing

187

30.9

170

28.4

   

VBD (%)b

 1st quartile

119

19.7

100

16.7

1

 

p = 0.12

 2nd quartile

107

17.7

99

16.5

1.1

(0.7, 1.6)

 

 3rd quartile

101

16.7

111

18.5

1.3

(0.9, 1.9)

 

 4th quartile

91

15.0

119

19.9

1.6

(1.0, 2.3)

 

 Missing

187

30.9

170

28.4

   

VAS (%)c

 1st quartile

174

28.8

143

23.9

1

  

 2nd quartile

157

26

137

22.9

1.1

(0.8, 1.5)

p = 0.04

 3rd quartile

132

21.8

165

27.5

1.5

(1.1, 2.1)

 

 4th quartile

142

23.5

154

25.7

1.3

(0.9, 1.8)

 

DG

 1

27

4.5

14

2.3

1

 

p = 0.04

 2

206

34.0

193

32.2

1.7

(0.9, 3.5)

 

 3

135

22.3

151

25.2

2.1

(1.0, 4.2)

 

 4

50

8.3

71

11.9

2.6

(1.3, 5.7)

 

 Missing

187

30.9

170

28.4

   
  1. Quartile cut-points.
  2. aFGV: 11.70, 37.95, 51.30, 73.35, 306.50.
  3. bVBD: 2.4, 4.8, 6.9, 10.9, 30.0.
  4. cVAS: 1.9, 29.0, 47.0, 64.0, 96.1.
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