Table 2

Univariate analysis of factors influencing breast cancer specific survival
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

Robson et al. Breast Cancer Res 2004 6:R8   doi:10.1186/bcr658