Table 1. Characteristics of Women With DCIS .
| Variable | Women, No. (%) (N = 144 524) |
|---|---|
| Year of diagnosis | |
| Mean (SD) [95% CI] | 2006.3 (5.2) [2006.3-2006.3] |
| Median (IQR) [range] | 2007.0 (2002.0-2011.0) [1995.0-2014.0] |
| 1995-1999 | 15 797 (10.9) |
| 2000-2004 | 38 201 (26.4) |
| 2005-2009 | 43 426 (30.0) |
| 2010-2014 | 47 100 (32.6) |
| Age at diagnosis, y | |
| Mean (SD) [95% CI] | 57.4 (11.0) [57.4-57.5] |
| Median (IQR) [range] | 57.0 (49.0-66.0) [25.0-79.0] |
| <40 | 5146 (3.6) |
| 40-49 | 33 966 (23.5) |
| 50-59 | 43 737 (30.3) |
| 60-69 | 37 432 (25.9) |
| 70-79 | 24 243 (16.8) |
| Race/ethnicity | |
| White | 112 539 (77.9) |
| Black | 15 415 (10.7) |
| East Asian | 6344 (4.4) |
| Southeast Asian | 5664 (3.9) |
| Other or unknown | 4562 (3.2) |
| Income, $ | |
| Mean (SD) [95% CI] | 48 812 (11 380) [48 754-48 871] |
| Median (IQR) [range] | 47 070 (42 070-55 950) [15 810-79 890] |
| <40 000 | 26 729 (18.5) |
| 40 000-45 000 | 35 277 (24.4) |
| 45 000-50 000 | 23 098 (16.0) |
| >50 000 | 59 407 (41.1) |
| Missing | 13 (<0.1) |
| Histological presentation | |
| Comedonecrosis | 17 246 (11.9) |
| Cribriform | 12 799 (8.9) |
| Intraductal, solid type | 68 449 (47.4) |
| Other ductal, NOS | 38 048 (26.3) |
| Papillary | 7982 (5.5) |
| Tumor grade | |
| I | 16 539 (11.4) |
| II | 48 852 (33.8) |
| III/IV | 53 924 (37.3) |
| Unknown | 25 209 (17.4) |
| Tumor size, cm | |
| Mean (SD) [95% CI] | 1.7 (2.1) [1.7-1.7] |
| Median (IQR) [range] | 1.1 (0.6-2.0) [0.1-98.8] |
| <1 | 43 152 (29.9) |
| 1-2 | 28 877 (20.0) |
| 2-3 | 12 561 (8.7) |
| 3-5 | 9279 (6.4) |
| >5 | 6876 (4.8) |
| Unknown | 43 779 (30.3) |
| ER status | |
| Positive | 76 611 (53.0) |
| Negative | 13 730 (9.5) |
| Unknown | 54 183 (37.5) |
| PR status | |
| Positive | 63 623 (44.0) |
| Negative | 21 405 (14.8) |
| Unknown | 59 496 (41.2) |
| Surgical treatment | |
| Lumpectomy | 96 806 (67.0) |
| Mastectomy | 38 870 (26.9) |
| Unknown (diagnosis prior to 1998) | 8507 (5.9) |
| Unknown | 341 (0.2) |
| Radiotherapy | |
| No | 74 441 (51.5) |
| Yes | 68 118 (47.1) |
| Unknown | 1965 (1.4) |
| Follow-up time, y | |
| Mean (SD) [95% CI] | 9.2 (4.9) [9.1-9.2] |
| Median (IQR) [range] | 8.7 (5.1-13.0) [0.1-20.0] |
| Death in follow-up | |
| No | 128 991 (89.3) |
| Yes | 15 533 (10.7) |
| Death from breast cancer | |
| No | 142 984 (98.9) |
| Yes | 1540 (1.1) |
| Death from other cause | |
| No | 130 531 (90.3) |
| Yes | 13 993 (9.7) |
| Vital status | |
| Alive | 128 991 (89.3) |
| Death from breast | 1540 (1.1) |
| Death from other cancer | 3874 (2.7) |
| Death from heart disease | 3880 (2.7) |
| Death from other diseases | 3619 (2.5) |
| Unknown cause of death | 2620 (1.8) |
Abbreviations: DCIS, ductal carcinoma in situ; ER, estrogen receptor; IQR, interquartile range; NOS, not otherwise specified; PR, progesterone receptor.