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Table 1 Distribution of risk factors in 1857 subjects from MNYR/New York site of the BCFR.

From: Breast cancer risk assessment across the risk continuum: genetic and nongenetic risk factors contributing to differential model performance

  Unaffected after 10 yrs Follow-up <10 yrs Died within 10 yrs Breast cancer within 10 yrs Total
All subjects 730 989 55 83 1857
Age (yrs) at risk assignment
20-29 117 164 0 3 284
30-39 191 208 11 16 426
40-49 190 302 12 26 530
50-59 155 192 17 25 389
60-70 77 123 15 13 228
Age (yrs) at first menarche
≥14 147 251 13 16 427
12-13 415 503 29 49 996
7-11 166 225 11 18 420
Unknown 2 10 2 0 14
Age (yrs) at FLB
<20yr 27 118 8 2 155
20-24 161 227 15 18 421
25-29 148 187 10 18 363
≥30 117 145 10 20 292
Nulliparous 277 312 12 25 626
Menopausal status
Pre 448 602 15 40 1105
Peri 67 104 4 6 181
Post 173 205 28 29 435
Unknown 42 78 8 8 136
HRT use
Never 583 814 32 59 1488
Previous user (more than 5 yr ago) 12 18 2 0 32
Previous user (less than 5 yr ago) 31 69 6 10 116
Current user 104 88 15 14 221
Number of breast biopsies
0 593 851 41 61 1546
1 98 101 7 16 222
≥2 39 37 7 6 89
Atypical hyperplasia
Absent/Unknown 727 987 55 82 1851
Present 3 2 0 1 6
First-degree female relatives with BC
0 251 336 28 26 641
1 397 544 22 40 1003
≥2 82 109 5 17 213
All female relatives with BC
0 75 139 15 10 239
1 321 479 19 29 848
≥2 334 371 21 44 770
Relatives with OC
0 555 752 27 61 1395
1 127 188 22 17 354
≥2 48 49 6 5 108
BRCA mutation status
Total mutation positive 47 45 4 14 110
BRCA1 36 22 4 8 70
BRCA2 11 23 0 6 40
Race/Ethnicity
Non-Hispanic White 651 509 36 74 1270
Hispanic 41 332 11 4 388
African American 6 42 5 0 53
Chinese 2 35 0 1 38
Filipino 0 1 0 0 1
Other Asian 4 20 2 1 27
Other 26 50 1 3 80
  1. (N = 1857).
  2. BC, breast cancer; FLB, first live birth; HRT, hormone replacement therapy; OC, ovarian cancer