|
Age (yrs)*
|
50.6
|
± 7.7
|
|
Race
| | |
|
White
|
2,964
|
73.4%
|
|
Black
|
700
|
17.3%
|
|
Other
|
373
|
9.3%
|
|
Number of pregnancies
| | |
|
0
|
322
|
8.0%
|
|
1–2
|
1,037
|
25.7%
|
|
3–4
|
1,349
|
33.4%
|
|
>4
|
1,329
|
32.9%
|
|
Education level
| | |
|
Illiterate
|
259
|
6.5%
|
|
Between 1 and 7 years of schooling
|
2.238
|
56.5%
|
|
Between 8 and 11 years of schooling
|
1.380
|
34.9%
|
|
College degree
|
83
|
2.1%
|
|
Body Mass Index
| | |
|
<25
|
1,062
|
26.3%
|
|
25–30
|
1,502
|
37.2%
|
|
30–40
|
1,320
|
32.7%
|
|
>40
|
153
|
3.8%
|
|
Age at first delivery (yrs)*
|
21.4
|
± 5.1
|
|
Menopause after 55 yrs old†
|
88
|
4.4%
|
|
Menarche before 12 yrs old
|
872
|
21.6%
|
|
History of HRT use
|
485
|
12.0%
|
|
History of OC use
|
3,331
|
82.5%
|
|
Smoking status
| | |
|
Current smoker
|
1,170
|
29.0%
|
|
Former smoker
|
393
|
9.7%
|
|
No historry
|
2,474
|
61.3%
|
|
First-degree relative with history of cancer (any site)
|
1,395
|
33.7%
|
|
First-degree relative with history of breast or ovary cancer
|
248
|
6.1%
|
|
Previous breast biopsy
|
154
|
3.8%
|
