Table 2.
Hazard ratio (HR) of cancer-specific mortality from breast cancer by socioeconomic status (SES)
| Model 0 | Model 1 | Model 2 | Model 3 | Model 4 | Model 5 | |
|---|---|---|---|---|---|---|
| Area-based SES group | SES only | Model 0 + age & year | Model 1 + stage | Model 2 + treatment | Model 3 + race | Model 4 + rural/urban |
| HR & (CI†) | HR & (CI) | HR & (CI) | HR & (CI) | HR & (CI) | HR & (CI) | |
| Highest | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
| Upper middle | 1.05 (0.99-1.11) |
1.01 (0.96-1.07) |
1.00 (0.94-1.06) |
1.00 (0.95-1.06) |
0.99 (0.93-1.05) |
0.99 (0.93-1.05) |
| Lower middle | 1.23 (1.16-1.29) |
1.09 (1.03-1.15) |
1.08 (1.03-1.14) |
1.07 (1.01-1.12) |
1.06 (1.00-1.12) |
1.04 (0.99-1.10) |
| Lowest | 1.31 (1.24-1.38) |
1.19 (1.13-1.26) |
1.10 (1.04-1.16) |
1.08 (1.03-1.14) |
1.03 (0.97-1.08) |
1.03 (0.97-1.08) |
| p-value for SES | <0.0001 | <0.0001 | <0.0001 | 0.003 | 0.07 | 0.20 |
† 95% confidence intervals.