Association of Mammographic Breast Density with Dairy Product Consumption, Sun Exposure, and Daily Activity
Table 1
Frequency of classes of mammographic density in each group of dairy product intake, sunlight exposure, and daily activities. The bold fonts are figures that have been specifically pointed in Section 3.
Mammographic density*
Class 1
Class 2
Class 3
Class 4
Sum
No
Percent
No
Percent
No
Percent
No
Percent
No
Percent within group
Dairy consumption
Servings per day
<1
35
12.5%
125
44.5%
100
35.6%
21
7.5%
281
42.2%
1–3
35
11.0%
163
51.3%
100
31.4%
20
6.3%
318
47.7%
>3
6
9.0%
33
49.3%
21
31.3%
7
10.4%
67
10.1%
Sunlight exposure
Minutes/day
<30
56
11.6%
241
49.8%
157
32.4%
30
6.2%
484
76.5%
≥30
17
11.4%
62
41.6%
57
38.3%
13
8.7%
149
23.5%
Daily activities
Mild
9
12.2%
42
56.8%
22
29.7%
1
1.4%
74
10.7%
Moderate
51
11.3%
220
48.7%
146
32.3%
35
7.7%
452
65.2%
Severe
23
13.8%
72
43.1%
60
35.9%
12
7.2%
167
24.1%
Class of MD according to the parenchymal mammographic classification system of ACR.
