Table 1.
Characteristics of Breast Cancer Cases, Wisconsin, 1995–2003.
| Characteristic |
All Subjects n (%) N=5,820a |
No College n (%) N=2,728 |
Some College/ College Degree n (%) N=3,024 |
|---|---|---|---|
| Age at diagnosis | |||
| 20–34 | 147 (2.5) | 49 (1.8) | 96 (3.2) |
| 35–44 | 889 (12.3) | 336 (12.3) | 547 (18.1) |
| 45–54 | 1,897 (32.6) | 737 (27.0) | 1,145 (37.9) |
| 55–64 | 2,037 (35.0) | 1,057 (38.8) | 951 (31.5) |
| ≥65 | 850 (14.6) | 549 (20.1) | 285 (9.4) |
| Menopausal statusb | |||
| Premenopausal | 2,134 (36.7) | 810 (30.0) | 1,322 (43.7) |
| Postmenopausal | 3,252 (55.9) | 1,775 (65.1) | 1,444 (47.8) |
| Unknown | 434 (7.5) | 143 (5.2) | 258 (8.5) |
| Family history of breast cancerc | |||
| No | 4419 (75.9) | 2,062 (75.6) | 2,354 (77.8) |
| Yes | 1,217 (20.9) | 611 (22.4) | 606 (20.0) |
| Unknown | 184 (3.2) | 55 (2.0) | 64 (2.1) |
| Recent mammography utilizationd | |||
| None | 388 (10.0) | 243 (12.1) | 145 (8.0) |
| <1 per year | 742 (19.1) | 402 (20.0) | 340 (18.7) |
| Annual | 2,685 (68.9) | 1,358 (67.4) | 1,327 (72.8) |
| Unknown | 80 (2.1) | 11 (0.6) | 11 (0.6) |
| History of postmenopausal hormone useb,e | |||
| Never | 1,292 (39.7) | 848 (47.8) | 442 (30.6) |
| Ever | 1,925 (59.2) | 925 (52.1) | 999 (69.2) |
| Unknown | 35 (1.1) | 2 (0.1) | 3 (0.2) |
| Body mass index (kg/m2)b | |||
| <18.5 | 77 (1.3) | 33 (1.2) | 44 (1.5) |
| 18.5–24.9 | 2,537 (43.6) | 1,055 (38.7) | 1,471 (48.6) |
| 25.0–29.9 | 1,838 (31.6) | 912 (33.4) | 915 (30.3) |
| ≥30.0 | 1,282 (22.0) | 695 (25.5) | 579 (19.2) |
| Unknown | 86 (1.5) | 33 (1.2) | 15 (0.5) |
| Smoking historyb | |||
| Never | 2,956 (50.8) | 1,295 (47.5) | 1,651 (54.6) |
| Former | 1,714 (29.5) | 809 (29.7) | 901 (29.8) |
| Current | 1,083 (18.6) | 614 (22.5) | 466 (15.4) |
| Unknown | 67 (1.2) | 10 (0.4) | 6 (0.2) |
| Stage of disease at diagnosis | |||
| Localized | 3,911 (67.2) | 1,825 (66.9) | 2,041 (67.5) |
| Regional | 1,678 (28.8) | 780 (28.6) | 881 (29.1) |
| Distant | 107 (1.8) | 50 (1.8) | 54 (1.8) |
| Unknown | 124 (2.1) | 73 (2.7) | 48 (1.6) |
| Histological type | |||
| Lobular | 554 (9.5) | 270 (9.9) | 278 (9.2) |
| Nonlobular | 5,266 (90.5) | 2,458 (90.1) | 2,746 (90.8) |
a
Includes 68 women missing information on education.
b
At one year prior to diagnosis.
c
At the time of the interview.
d
During the five years preceding the date of diagnosis; limited to women age 50 or older.
e
Limited to postmenopausal women.