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Table 1 Distribution of individual and area-level characteristics by race, among white and black women with breast cancer, reported to the Maryland cancer registry, 1992-2003

From: The association of area-level social class and tobacco use with adverse breast cancer characteristics among white and black women: evidence from Maryland, 1992–2003

    Race/Ethnicity of cases
  Blockgroups (n = 3,591) Cases (n = 50,062) Whites (n = 39,116) Blacks (n = 10,946)
Individual level % % % %
Age at Dx     
21-35   2.8 2.3 4.7
36-55   36.9 34.5 45.7
56-75   43.3 44.6 38.5
76-106   17.0 18.6 11.1
Year of Dx     
1992-1995   29.7 30.3 27.5
1996-1999   34.7 34.8 34.4
2000-2003   35.6 34.9 38.1
Grade     
1,2   39.2 41.4 31.2
3,4   29.3 27.1 37.3
No grade   31.5 31.5 31.5
Stage at Dx     
In-situ, local   66.4 68.3 59.9
Regional, Distant   26.8 25.2 32.2
No stage   6.8 6.5 7.9
Tumor Size (1999–2003 only)   (n = 21,573) (n = 16,570) (n = 5,003)
<20 mm   47.9 50.6 38.8
20+ mm   32.1 30.2 38.2
Not reported   20.0 19.2 23.0
Area-Level     
High School Graduation Rate     
26-69% 20.4 14.2 10.1 28.6
70-79% 21.0 19.4 18.8 21.8
80-89% 31.6 33.3 33.8 31.5
90-100% 27.0 33.1 37.3 18.1
Employment     
52-84% 2.1 1.1 0.2 4.0
85-89% 3.4 1.9 0.6 6.9
90-94% 12.8 9.9 6.4 22.4
95-100% 81.7 87.1 92.8 66.7
White Collar Employment     
13-49% 18.7 13.2 10.9 21.7
50-64% 33.5 30.0 28.4 35.9
65-74% 22.4 23.8 23.5 24.8
75-98% 25.4 33.0 37.3 17.6
Per Capita Income (in $1000)     
4-14 18.9 12.7 7.4 31.7
15-19 23.9 21.0 19.9 25.0
20-29 39.7 42.1 44.2 34.6
30-107 17.6 24.1 28.4 8.7
Tobacco     
$123-599 29.5 33.0 27.7 51.8
$600-699 19.6 18.9 16.7 27.0
$700-799 17.0 16.7 18.0 11.7
$800-2442 33.9 31.4 37.6 9.4
  1. Differences in distribution between white and black cases, all significant at p < 0.001, chi square test.