Table 1.
Characteristics of CBCS Participants With Genotype Data
| Cases (%) | Controls (%) | |
|---|---|---|
| N | 1946 (100) | 1747 (100) |
| Self-identified race | ||
| African American | 742 (38.1) | 658 (37.7) |
| Caucasian | 1204 (61.9) | 1089 (62.3) |
| Age | ||
| 20–24 | 6 (0.3) | 1 (0.0) |
| 25–29 | 21 (1.1) | 10 (0.6) |
| 30–34 | 85 (4.4) | 60 (3.4) |
| 35–39 | 172 (8.8) | 133 (7.6) |
| 40–44 | 276 (14.2) | 242 (13.9) |
| 45–49 | 387 (19.9) | 359 (20.5) |
| 50–54 | 208 (10.7) | 237 (13.6) |
| 55–59 | 216 (11.1) | 191 (10.9) |
| 60–64 | 201 (10.3) | 166 (9.5) |
| 65–69 | 200 (10.3) | 185 (10.6) |
| 70–74 | 174 (8.9) | 163 (9.3) |
| Menopausal status | ||
| Premenopausal | 864 (44.4) | 746 (42.7) |
| Postmenopausal | 1082 (55.6) | 1001 (57.3) |
| Stage | ||
| 1 | 609 (31.3) | |
| 2 | 627 (32.3) | |
| 3 | 144 (7.4) | |
| 4 | 42 (2.2) | |
| CIS | 437 (22.5) | |
| Missinga | 87 (4.5) | |
| Tumor sizeb | ||
| ≤2 cm | 769 (51.0) | |
| >2–5 cm | 502 (33.3) | |
| >5 cm | 146 (9.7) | |
| Missing | 92 (6.1) | |
| Subtype | ||
| Luminal A | 674 (34.6) | |
| Luminal B | 114 (5.9) | |
| HER2+/ER− | 94 (4.8) | |
| Basal-like | 199 (10.2) | |
| Unclassified | 129 (6.6) | |
| Missing | 736 (37.8) | |
a
Invasive breast cancer cases.
b
Not available for CIS (carcinoma in situ) cases.