|
Hypothesised risk factors
| | |
|
Absolute breast volume FA (ml; median (IQR))
|
63.17 (88.54)
|
52.99 (68.38)
|
|
Relative breast volume FA (%; median (IQR))
|
2.70 (3.63)
|
2.49 (2.91)
|
|
Other potential risk factors/confounders
| | |
|
BMI (n = 503; mean (SD))
|
23.8 (3.11)
|
23.9 (3.22)
|
|
Height (cm; mean (SD))
|
161.7 (6.10)
|
159.7 (5.88)
|
|
Age at menarche (years; n = 503; mean (SD))
|
13.0 (1.61)
|
13.6 (1.68)
|
|
Age at 1st pregnancy (years; n = 400; mean (SD))
|
25.4 (4.19)
|
23.9 (4.31)
|
|
Number of pregnancies (n = 503; median (IQR))
|
2 (2)
|
2 (2)
|
|
Family history
|
68 (27%)
|
32 (13%)
|
|
Mean breast volume (ml; median (IQR))
|
569 (388)
|
582 (370)
|
|
Parenchyma type: right breast
| | |
|
N1
|
21 (8%)
|
54 (21%)
|
|
P1
|
42 (17%)
|
33 (13%)
|
|
P2
|
65 (26%)
|
40 (16%)
|
|
DY
|
124 (49%)
|
125 (50%)
|
|
Parenchyma type: left breast
| | |
|
N1
|
21 (8%)
|
55 (22%)
|
|
P1
|
42 (17%)
|
33 (13%)
|
|
P2
|
65 (26%)
|
43 (17%)
|
|
DY
|
124 (49%)
|
121 (48%)
|
|
Menopausal status (n = 482)
| | |
|
Pre
|
99 (41%)
|
76 (32%)
|
|
Peri
|
44 (18%)
|
49 (20%)
|
|
Post
|
100 (41%)
|
114 (48%)
|
|
Age at menopause (years; n = 212; median (IQR))
|
50 (4)
|
47 (6)
|
