Table 5

Five-year risk of breast cancer by age and model B risk decile
Model B risk decile
Age group, years
1
 2
 3
 4
 5
 6
 7
 8
 9
 10
30–34
 5-year incidencea
 65
 73
 82
 97
 105
 127
 147
 197
 249
 321

RR
 1
 1.1
 1.3
 1.5
 1.6
 2.0
 2.3
 3.0
 3.8
 5.0
35–39
 5-year incidencea
 82
 107
 126
 142
 160
 182
 214
 259
 328
 504

RR
 1
 1.3
 1.5
 1.7
 2.0
 2.2
 2.6
 3.1
 4.0
 6.1
40–44
 5-year incidencea
 117
 159
 191
 221
 253
 294
 350
 425
 527
 767

RR
 1
 1.4
 1.6
 1.9
 2.1
 2.5
 3.0
 3.6
 4.5
 6.6
45–49
 5-year incidencea
 177
 249
 299
 347
 401
 467
 550
 659
 823
 1,231

RR
 1
 1.4
 1.7
 2.0
 2.7
 2.6
 3.1
 3.7
 4.6
 7.0
50–54
 5-year incidencea
 266
 373
 447
 522
 605
 702
 819
 973
 1,204
 1,824

RR
 1
 1.4
 1.7
 2.0
 2.3
 2.6
 3.1
 3.7
 4.5
 6.9
55–59
 5-year incidencea
 351
 495
 595
 692
 795
 913
 1,057
 1,247
 1,542
 2,368

RR
 1
 1.4
 1.7
 2.0
 2.3
 2.6
 3.0
 3.6
 4.4
 6.7
60–64
 5-year incidencea
 436
 630
 759
 881
 1,009
 1,151
 1,323
 1,548
 1,909
 2,982

RR
 1
 1.4
 1.7
 2.0
 2.3
 2.6
 3.0
 3.6
 4.4
 6.8
65–69
 5-year incidencea
 533
 788
 951
 1,105
 1,265
 1,445
 1,660
 1,941
 2,383
 3,714

RR
 1
 1.5
 1.8
 2.0
 2.4
 2.7
 3.1
 3.6
 4.5
 7.0
70–74
 5-year incidencea
 635
 948
 1,160
 1,358
 1,563
 1,790
 2,058
 2,419
 2,991
 4,616

RR
 1
 1.5
 1.8
 2.1
 2.5
 2.8
 3.2
 3.8
 4.7
 7.3
75–79
 5-year incidencea
 681
 1,077
 1,326
 1,578
 1,827
 2,119
 2,462
 2,954
 3,671
 5,785

RR
 1
 1.6
 1.9
 2.3
 2.7
 3.1
 3.6
 4.3
 5.4
 8.5

aFive-year incidence per 105 person-years adjusting for competing mortality risks. RR, relative risk.

Rosner et al. Breast Cancer Research 2008 10:R55   doi:10.1186/bcr2110