Table 2.
Age-adjusted hazard ratios and 95% confidence intervals for breast cancer mortality associated with economic and Black-White racial segregation indices among women diagnosed with breast cancer, overall and by race and age, Maryland 2007–2017
| Race | Age | ||||
|---|---|---|---|---|---|
| Overall | Black | White | <60 | 60+ | |
| Deaths | 3739 | 1447 | 2292 | 1665 | 2074 |
| Person-Years | 216295 | 61727 | 154568 | 111699 | 104596 |
| Economic Segregation | |||||
| Quintile 1 | (reference; most privileged/least deprived) | ||||
| Quintile 2 | 1.18*** (1.05, 1.33) | 1.17 (0.94, 1.46) | 1.16** (1.02, 1.31) | 1.27*** (1.06, 1.53) | 1.10 (0.94, 1.29) |
| Quintile 3 | 1.21*** (1.08, 1.35) | 1.23* (1.00, 1.51) | 1.12* (0.98, 1.28) | 1.36*** (1.15, 1.61) | 1.08 (0.93, 1.26) |
| Quintile 4 | 1.41*** (1.25, 1.58) | 1.30*** (1.07, 1.59) | 1.31*** (1.15, 1.49) | 1.54*** (1.29, 1.85) | 1.30*** (1.12, 1.49) |
| Quintile 5 | 1.67*** (1.50, 1.86) | 1.43*** (1.19, 1.72) | 1.45*** (1.26, 1.66) | 2.01*** (1.71, 2.36) | 1.44*** (1.25, 1.66) |
| P-interaction | 0.87 | 0.04 | |||
| Racial Segregation | |||||
| Quintile 1 | 1.00 (reference; most privileged/least deprived) | ||||
| Quintile 2 | 1.06 (0.95, 1.19) | 1.29 (0.77, 2.14) | 1.03 (0.92, 1.15) | 1.09 (0.92, 1.30) | 1.05 (0.91, 1.20) |
| Quintile 3 | 1.12** | 1.32 | 1.02 | 1.15 | 1.11 |
| (1.00, 1.25) | (0.82, 2.13) | (0.91, 1.15) | (0.96, 1.36) | (0.97, 1.28) | |
| Quintile 4 | 1.42*** (1.28, 1.58) | 1.44 (0.91, 2.28) | 1.16** (1.03, 1.31) | 1.62*** (1.38, 1.90) | 1.29*** (1.13, 1.49) |
| Quintile 5 | 1.57*** (1.42, 1.74) | 1.27 (0.80, 2.00) | 1.17 (0.96, 1.44) | 1.83*** (1.56, 2.14) | 1.41*** (1.23, 1.62) |
| P-interaction | 0.61 | 0.03 | |||
| Racialized Economic Segregation | |||||
| Quintile 1 | 1.00 (reference; most privileged/least deprived) | ||||
| Quintile 2 | 1.14** (1.01, 1.30) | 1.17 (0.83, 1.64) | 1.11 (0.98, 1.25) | 1.20* (1.00, 1.45) | 1.10 (0.93, 1.29) |
| Quintile 3 | 1.34*** (1.19, 1.51) | 1.17 (0.85, 1.59) | 1.26*** (1.12, 1.25) | 1.53*** (1.28, 1.84) | 1.21** (1.05, 1.41) |
| Quintile 4 | 1.42*** (1.26, 1.60) | 1.13 (0.84, 1.2) | 1.23*** (1.09, 1.40) | 1.77*** (1.48, 2.11) | 1.20** (1.03, 1.40) |
| Quintile 5 | 1.84*** (1.64, 2.06) | 1.20 (0.90, 1.60) | 1.66*** (1.41, 1.95) | 2.17*** (1.83, 2.57) | 1.62*** (1.40, 1.88) |
| P-interaction | 0.04 | 0.004 | |||
p-value<0.1,
p-value<0.05,
p-value<0.01
For economic segregation, a quintile towards 1 indicates higher concentration of high-income households (i.e., higher economic privilege) and a quintile towards 5 indicates higher concentration of low-income households (i.e., lower economic privilege). For racial segregation, a quintile towards 1 indicates higher concentration of White households (i.e., higher racial privilege) and a quintile towards 5 indicates higher concentration of Black households (i.e., lower racial privilege). For racialized economic segregation, a quintile of towards 1 indicates higher concentration of high-income White households (i.e., higher racialized economic privilege) and quintile towards 5 indicates higher concentration of low-income Black household (i.e., lower racialized economic privilege).