|
Characteristics of cases and controls |
||||
| Characteristic |
Cases (n = 506) |
Controls (n = 459) |
||
|
|
||||
| n |
% |
n |
% |
|
|
|
||||
| Age at reference (years) |
||||
| < 35 |
62 |
12.3 |
80 |
17.4 |
| 35+ |
444 |
87.7 |
379 |
82.6 |
| Race |
||||
| White |
450 |
88.9 |
412 |
89.8 |
| Nonwhite |
56 |
11.1 |
47 |
10.2 |
| Family history |
||||
| None |
280 |
56.7 |
294 |
66.1 |
| First degree |
94 |
19.0 |
36 |
8.1 |
| Second degree |
120 |
24.3 |
115 |
25.8 |
| Unknown |
12 |
14 |
||
| Menopausal status |
||||
| Premenopausal |
445 |
88.3 |
392 |
85.8 |
| Postmenopausal |
59 |
11.7 |
65 |
14.2 |
| Unknown |
2 |
2 |
||
Friedrichsen et al. Breast Cancer Res 2004 6:R629 doi:10.1186/bcr933 |
||||