Table 3. Cox's proportional hazards regression models for disease-specific survival. SES is incorporated in a step-wise analysis: model 1 without SES and model 2 with SES.
| Model 1 a | Model 2 a | |||||
|---|---|---|---|---|---|---|
| Characteristic | HR | 95% CI | p -Value | HR | 95% CI | p -Value |
| Age categories (y) | ||||||
| – < 45 | – | – | – | – | ||
| 45–59 | 1.51 | 1.30, 1.74 | <0.001 | 1.51 | 1.30, 1.74 | <0.001 |
| 60–79 | 1.89 | 1.62, 2.20 | <0.001 | 1.88 | 1.62, 2.19 | <0.001 |
| 80+ | 3.32 | 2.64, 4.18 | <0.001 | 3.36 | 2.67, 4.23 | <0.001 |
| Race | ||||||
| White | – | – | – | – | ||
| Black | 1.1 | 0.94, 1.28 | 0.2 | 1.01 | 0.87, 1.19 | 0.9 |
| Asian/Pacific Islander | 0.74 | 0.66, 0.83 | <0.001 | 0.73 | 0.65, 0.82 | <0.001 |
| Alaskan Native/Native American | 0.93 | 0.42, 2.08 | 0.9 | 0.92 | 0.41, 2.07 | 0.8 |
| Other | 0.26 | 0.09, 0.82 | 0.022 | 0.26 | 0.08, 0.80 | 0.019 |
| Sex | ||||||
| Female | – | – | – | – | ||
| Male | 1.23 | 1.10, 1.38 | <0.001 | 1.23 | 1.10, 1.38 | <0.001 |
| Hispanic ethnicity | ||||||
| Non-Hispanic | – | – | – | – | ||
| Hispanic | 0.99 | 0.82, 1.20 | >0.9 | 0.94 | 0.78, 1.14 | 0.5 |
| The Yost Index | ||||||
| Third tertile | – | – | ||||
| Second tertile | 1.20 | 1.05, 1.37 | 0.007 | |||
| First tertile | 1.34 | 1.17, 1.52 | <0.001 | |||
Abbreviations: CI, confidence interval; HR, hazard ratio; SES, socioeconomic status.
Note: Figures in bold indicate statistical significance p < 0.05.
a
Both models control for stage and treatment (surgery, radiation, and chemotherapy).