Table 4.
Number of geographical units at various levels of aggregation with significant disparities in breast cancer mortality for African-American women.
| Poverty Level | High SES (0-9.99%) | Middle SES (10.00-19.99%) | Low SES (≥20.00%) | Total | |
|---|---|---|---|---|---|
| Census Tract (4388) | RD1 < 0 | 0 | 0 | 2 | 2 |
| RD > 0 | 34 | 54 | 190 | 278 | |
| RD2 < 1 | 0 | 0 | 0 | 0 | |
| RR > 1 | 0 | 0 | 0 | 0 | |
| Zip Code (2884) | RD < 0 | 0 | 0 | 0 | 0 |
| RD > 0 | 2 | 8 | 12 | 22 | |
| RR < 1 | 0 | 0 | 0 | 0 | |
| RR > 1 | 3 | 0 | 0 | 3 | |
| County (254) | RD < 0 | 0 | 0 | 0 | 0 |
| RD > 0 | 0 | 1 | 0 | 1 | |
| RR < 1 | 0 | 0 | 0 | 0 | |
| RR > 1 | 0 | 2 | 0 | 2 |
Units are classified according to their socioeconomic status (SES) as measured by the percentage of population below the poverty threshold.
1The rate difference (RD) measurement is an absolute measure of breast cancer mortality rates for Black women compared to the Whites.
2The rate ratio (RR) measurement is a relative measure of breast cancer mortality rates for Black women compared to the Whites.