Table 1.
Characteristics of Women Diagnosed with Ductal Carcinoma in situ in the National Cancer Data Base, 1998–2011
| Characteristic | N | % |
|---|---|---|
| Total | 416,232 | |
| Age group, y | ||
| <45 | 47,567 | 11.4 |
| 45–54 | 108,907 | 26.2 |
| 55–64 | 109,767 | 26.4 |
| 65–74 | 89,712 | 21.5 |
| ≥75 | 60,285 | 14.5 |
| Year of diagnosis | ||
| 1998–1999 | 48,002 | 11.5 |
| 2000–2001 | 54,101 | 13.0 |
| 2002–2003 | 56,418 | 13.5 |
| 2004–2005 | 56,421 | 13.6 |
| 2006–2007 | 61,994 | 14.9 |
| 2008–2009 | 70,605 | 17.0 |
| 2010–2011 | 68,691 | 16.5 |
| Ancestry/ethnicity | ||
| Non-Hispanic, European | 334,757 | 80.4 |
| Non-Hispanic, African | 42,648 | 10.2 |
| Hispanic | 16,354 | 3.9 |
| Other | 22,473 | 5.4 |
| Geographic region | ||
| Northeast | 103,564 | 25.0 |
| Midwest | 102,289 | 24.5 |
| South | 139,354 | 33.5 |
| West | 71,025 | 17.0 |
| Health insurance | ||
| Private | 250,004 | 60.1 |
| Government | 151,069 | 36.3 |
| Uninsured | 6,173 | 1.5 |
| Unknown | 8,986 | 2.2 |
| Primary treatment | ||
| Breast conserving surgery without adjuvant radiation | 95,076 | 22.8 |
| Breast conserving surgery with adjuvant radiation | 189,847 | 45.6 |
| Mastectomy | 131,309 | 31.5 |
| Adjuvant endocrine therapy | ||
| Yes | 120,607 | 29.0 |
| No | 270,859 | 65.1 |
| Unknown | 24,766 | 5.9 |
| Facility type | ||
| Community cancer program | 40,832 | 9.8 |
| Comprehensive community cancer program | 247,915 | 59.5 |
| Academic/research program | 118,025 | 28.4 |
| Other specified types of cancer programs | 9,460 | 2.3 |