Table 2.
Descriptive characteristics of an index diagnostic mammogram among women aged <40, BCSC data 1996–2005
| Total |
White |
AA |
Asian |
Hispanic |
||||||
|---|---|---|---|---|---|---|---|---|---|---|
| n | % | n | % | n | % | n | % | n | % | |
| 26,262 | 26.4% | 19,756 | 75.2% | 2,547 | 9.7% | 1,241 | 4.7% | 2,718 | 10.4% | |
| Age at first mammogram (years) | ||||||||||
| 18–34 | 14,490 | 55.2 | 10,831 | 54.8 | 1,544 | 60.6 | 643 | 51.8 | 1,472 | 54.2 |
| 35–39 | 11,772 | 44.8 | 8,925 | 45.2 | 1,003 | 39.4 | 598 | 48.2 | 1,246 | 45.8 |
| Education level | ||||||||||
| < High school graduate | 1,311 | 6.1 | 675 | 4.0 | 224 | 12.0 | 79 | 7.0 | 333 | 18.8 |
| High school graduate/GED | 4,705 | 21.9 | 3,551 | 21.2 | 524 | 28.2 | 135 | 12.0 | 495 | 27.9 |
| Some college/tech. school | 6,321 | 29.4 | 4,917 | 29.4 | 656 | 35.3 | 241 | 21.4 | 507 | 28.6 |
| College graduate | 9,176 | 42.7 | 7,608 | 45.4 | 457 | 24.6 | 672 | 59.6 | 439 | 24.8 |
| Unknown | 4,749 | 18.1 | 3,005 | 15.2 | 686 | 26.9 | 114 | 9.2 | 944 | 34.7 |
| First-degree family history of breast cancer | ||||||||||
| No | 21,444 | 92.6 | 16,207 | 92.4 | 1,795 | 94.9 | 1,084 | 94.0 | 2,358 | 91.6 |
| Yes | 1,714 | 7.4 | 1,332 | 7.6 | 96 | 5.1 | 69 | 6.0 | 217 | 8.4 |
| Unknown | 3,104 | 11.8 | 2,217 | 11.2 | 656 | 25.8 | 88 | 7.1 | 143 | 5.3 |
| Symptoms or breast change reported | ||||||||||
| Typea | ||||||||||
| Lump (yes) | 17,125 | 69.0 | 13,293 | 71.8 | 1,603 | 63.6 | 731 | 61.0 | 1,498 | 57.7 |
| Discharge (yes) | 2,392 | 11.1 | 1,786 | 11.3 | 297 | 12.1 | 72 | 7.6 | 237 | 9.9 |
| Pain (yes) | 4,256 | 37.2 | 3,347 | 38.0 | 262 | 35.3 | 135 | 34.4 | 512 | 33.9 |
| Symptoms, not otherwise specified (yes) | 3,656 | 18.5 | 2,733 | 18.5 | 562 | 24.5 | 101 | 12.4 | 260 | 13.9 |
| Number | ||||||||||
| Any | 23,463 | 91.0 | 17,801 | 91.9 | 2,316 | 91.3 | 948 | 77.4 | 2,398 | 89.9 |
| None | 2,329 | 9.0 | 1,563 | 8.1 | 220 | 8.7 | 277 | 22.6 | 269 | 10.1 |
| Unknown | 470 | 1.8 | 392 | 2.0 | 11 | 0.4 | 16 | 1.3 | 51 | 1.9 |
| BI-RADS breast density | ||||||||||
| 1: Almost entirely fat | 788 | 4.1 | 549 | 3.7 | 132 | 6.1 | 12 | 2.2 | 95 | 6.1 |
| 2: Scattered fibroglandular tissue | 5,523 | 28.7 | 4,304 | 28.7 | 660 | 30.5 | 61 | 11.1 | 498 | 31.9 |
| 3: Heterogeneously dense | 8,973 | 46.6 | 7,067 | 47.2 | 974 | 45.0 | 253 | 45.9 | 679 | 43.6 |
| 4: Extremely dense | 3,965 | 20.6 | 3,056 | 20.4 | 397 | 18.4 | 225 | 40.8 | 287 | 18.4 |
| Unknown | 7,013 | 26.7 | 4,780 | 24.2 | 384 | 15.1 | 690 | 55.6 | 1,159 | 42.6 |
| Same day ultrasound performed | ||||||||||
| No | 14,136 | 54.7 | 10556 | 54.4 | 1,518 | 59.7 | 450 | 36.6 | 1,612 | 60.0 |
| Yes | 11,725 | 45.3 | 8847 | 45.6 | 1,023 | 40.3 | 781 | 63.4 | 1,074 | 40.0 |
| Unknown | 401 | 1.5 | 353 | 1.8 | 6 | 0.2 | 10 | 0.8 | 32 | 1.2 |
| Final recommendation | ||||||||||
| Normal interval follow-up | 15,006 | 60.8 | 11,299 | 60.8 | 1,524 | 61.7 | 668 | 57.3 | 1,515 | 61.1 |
| Short interval follow-up | 1,925 | 7.8 | 1,429 | 7.7 | 213 | 8.6 | 127 | 10.9 | 156 | 6.3 |
| Other workup, not otherwise specified | 99 | 0.4 | 76 | 0.4 | 13 | 0.5 | 2 | 0.2 | 8 | 0.3 |
| Additional imaging | 1,513 | 6.1 | 1,092 | 5.9 | 139 | 5.6 | 34 | 2.9 | 248 | 10.0 |
| Clinical exam | 3,031 | 12.3 | 2,501 | 13.5 | 170 | 6.9 | 99 | 8.5 | 261 | 10.5 |
| Biopsy/FNA/surgical consultation | 3,125 | 12.7 | 2,186 | 11.8 | 410 | 16.6 | 236 | 20.2 | 293 | 11.8 |
| Unknown | 1,563 | 6.0 | 1,173 | 5.9 | 78 | 3.1 | 75 | 6.0 | 237 | 8.7 |
Percentages are calculated among the non-missing data
Racial/ethnic categories are mutually exclusive representations of non-Hispanic African American (AA), non-Hispanic white, Asian, and Hispanic
BCSC Breast Cancer Surveillance Consortium
a
Percentage missing for individual symptoms: lump 5.5%; discharge 17.9%; pain 56.4%; symptoms not otherwise specified 24.6%