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Table 5 Five-year risk of breast cancer by age and model B risk decile

From: Risk prediction models with incomplete data with application to prediction of estrogen receptor-positive breast cancer: prospective data from the Nurses' Health Study

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