Variable | n | Breast cancer deaths (n) | P |
---|---|---|---|
BRCA mutation | |||
Any | 56 | 18 | 0.0002 |
None | 439 | 61 | |
BRCA1 mutation | |||
Mutation present | 43 | 16 | < 0.0001 |
Mutation absent | 439 | 61 | |
BRCA2 mutation | |||
Mutation present | 14 | 2 | 0.76 |
Mutation absent | 439 | 61 | |
Tumor size | |||
≤ 2 cm | 360 | 41 | < 0.0001 |
> 2 cm | 111 | 31 | |
Axillary node | |||
Negative | 290 | 31 | < 0.0001 |
Positive | 172 | 44 | |
Estrogen receptor | |||
Positive | 210 | 28 | 0.01 |
Negative | 127 | 31 | |
Age at diagnosis (years) | |||
< 50 | 169 | 42 | < 0.0001 |
≥ 50 | 326 | 37 | |
Chemotherapy | |||
Yes | 187 | 48 | < 0.0001 |
No | 279 | 30 | |
Tamoxifen | |||
Yes | 208 | 28 | 0.14 |
No | 237 | 47 |