Characteristics | Data | |
---|---|---|
Age, yr, mean ± SD (range) | 48.7 ± 13.2 | (20 to 86) |
Age, yr, categories | Â | Â |
  <35 | 73 | 15.7 |
  35 to 40 | 41 | 8.8 |
  40 to 49 | 114 | 24.6 |
  50 to 59 | 146 | 31.5 |
  60+ | 90 | 19.4 |
Race/ethnicity | Â | Â |
  White | 277 | 59.7 |
  African American/black | 145 | 31.3 |
  Hispanic | 9 | 1.9 |
  Asian | 16 | 3.5 |
  Other | 17 | 3.7 |
Age at menarche, yr | Â | Â |
  <11 | 90 | 19.4 |
  12 to 13 | 200 | 43.1 |
  ≥14 | 107 | 23.1 |
  Unknown | 67 | 14.4 |
Age at first live birth, yr | Â | Â |
  <20 | 69 | 14.9 |
  20 to 24 | 94 | 20.3 |
  25 to 29 | 76 | 16.4 |
  ≥30 | 80 | 17.2 |
  Nulliparous | 139 | 30 |
  Missing data | 6 | 1.3 |
First-degree relatives with breast or ovarian cancer, n | Â | |
  0 | 350 | 75.4 |
  1 | 101 | 21.8 |
  >1 | 13 | 2.8 |
Prior breast biopsy, n | Â | Â |
  0 | 266 | 57.3 |
  1 | 123 | 26.5 |
  >1 | 75 | 16.2 |
Prior AH | Â | Â |
  Yes | 20 | 4.3 |
  No | 444 | 95.7 |
Gail 5-yr risk estimate, mean ± SD | 1.54 ± 1.43 | |
Gail 5-yr risk estimate, % | Â | Â |
  <1.67 | 309 | 66.6 |
  ≥1.67 | 155 | 33.4 |
Body mass index, kg/m2 | Â | Â |
  <25 | 182 | 39.2 |
  25 to 29.9 | 95 | 20.5 |
  ≥30 | 108 | 23.3 |
  Missing data | 79 | 17.0 |
deCODE genetics panel RR, mean ± SD | 1.22 ± 0.44 | |
  <1.00 | 163 | 35.1 |
  1.01 to 1.49 | 182 | 39.2 |
  ≥1.50 | 119 | 25.7 |
Outcome of biopsy | Â | Â |
  Benign | 366 | 78.9 |
  AH/LCIS | 24 | 5.2 |
  DCIS | 33 | 7.1 |
  Invasive carcinoma | 41 | 8.8 |