Table 1.
Characteristics of the cohort selected from the Mayo Mammography Health Study (S2)
|
Study 2 characteristics | |||
|---|---|---|---|
| Variable | Control (N = 442) | Case (N = 226) | P value |
| Patient age at date of mammography |
54.8 ± 10.5 |
55.8 ± 10.6 |
0.28 |
| Age |
|
|
|
| 50–59, No. (%) |
125 (28%) |
61 (27%) |
0.73 |
| 60–69, No. (%) |
108 (24%) |
58 (26%) |
0.73 |
| 70+, No. (%) |
33 (7%) |
22 (10%) |
0.31 |
| Body mass index (Kg/m2) |
27.9 ± 6.6 |
27.9 ± 5.5 |
0.96 |
| Postmenopause, No. (%) |
277 (63%) |
131 (58%) |
0.24 |
| Postmenopausal hormone use |
|
|
|
| Never, No. (%) |
226 (51%) |
124 (55%) |
0.36 |
| Former, No. (%) |
23 (5%) |
9 (4%) |
0.48 |
| Current, No. (%) |
119 (27%) |
64 (28%) |
0.70 |
| Unknown, No. (%) |
74 (17%) |
29 (13%) |
0.19 |
| Time to diagnosis/enrollment |
8.1 ±3.4 |
8.6 ±3.9 |
0.09 |
| Breast area (cm2) | 168.8 ±72.0 | 169.0 ±67.2 | 0.98 |