White | Black | Asian | Hispanic | |
---|---|---|---|---|
Number of cases | 14,811 | 1536 | 865 | 1623 |
Age at diagnosis, % | ||||
Mean (SD) | 54.7 (10.6) | 53.3 (10.7) | 51.0 (9.7) | 51.5 (9.6) |
20–39 | 3.3 | 5.7 | 6.2 | 5.3 |
40–49 | 32.9 | 34.8 | 45.4 | 44.4 |
50–59 | 35.3 | 34.1 | 31.7 | 31.0 |
60–69 | 17.7 | 16.8 | 11.2 | 13.7 |
≥ 70 | 10.8 | 8.6 | 5.4 | 5.6 |
Length of follow-up, % | ||||
Median (range), months | 95 (6–311) | 80 (6–309) | 74 (6–310) | 77 (6–311) |
6–11 months | 4.2 | 5.5 | 6.1 | 6.2 |
12–59 months | 27.3 | 32.7 | 35.1 | 33.8 |
60–119 months | 30.2 | 30.4 | 30.5 | 30.6 |
≥ 120 months | 38.3 | 31.5 | 28.2 | 29.4 |
Year of the first LCIS diagnosis, % | ||||
1990–1999 | 19.2 | 16.3 | 12.5 | 13.8 |
2000–2009 | 53.2 | 47.5 | 46.8 | 48.1 |
2010–2015 | 27.7 | 36.3 | 40.7 | 38.1 |
Treatment | ||||
No surgery | 10.0 | 11.4 | 8.3 | 8.9 |
BCS alone | 82.7 | 82.4 | 86.0 | 84.7 |
BCS and radiation | 1.4 | 1.2 | 1.9 | 2.0 |
Mastectomy | 4.5 | 3.5 | 2.8 | 3.2 |
Unknown | 1.4 | 1.6 | 1.0 | 1.1 |