Table 2.
Multivariable Cox proportional hazard model for overall mortality
| Parameter | Hazard ratio | Lower 95% CI | Upper 95% CI | P-value |
|---|---|---|---|---|
| Socioeconomic status | ||||
| High | Reference | |||
| Mid-high | 1.23 | 1.14 | 1.33 | <0.001 |
| Mid-low | 1.36 | 1.25 | 1.48 | <0.001 |
| Low | 1.54 | 1.41 | 1.68 | <0.001 |
| Age (per year increase) | 1.02 | 1.01 | 1.03 | <0.001 |
| Race | ||||
| Caucasian | Reference | |||
| Black | 0.94 | 0.88 | 1.00 | 0.050 |
| Other | 0.81 | 0.68 | 0.97 | 0.024 |
| Hispanic ethnicity | ||||
| No | Reference | |||
| Yes | 0.61 | 0.54 | 0.70 | <0.001 |
| Insurance status | ||||
| Private | Reference | |||
| Not insured | 2.10 | 1.88 | 2.33 | <0.001 |
| Medicaid | 2.25 | 2.05 | 2.47 | <0.001 |
| Medicare | 2.38 | 2.18 | 2.60 | <0.001 |
| Other government | 1.20 | 0.99 | 1.45 | 0.066 |
| Facility type | ||||
| Academic/Research | Reference | |||
| Comprehensive community | 1.17 | 1.10 | 1.25 | <0.001 |
| Integrated cancer network | 1.07 | 1.00 | 1.16 | 0.053 |
| Community | 1.23 | 1.10 | 1.38 | <0.001 |
| Distance to hospital (per mile increase) | 1.00 | 1.00 | 1.00 | 0.009 |
| Area of residence | ||||
| Metropolitan | Reference | |||
| Urban | 1.05 | 0.99 | 1.11 | 0.1 |
| Rural | 1.24 | 1.03 | 1.50 | 0.026 |
| Charlson-Deyo Comorbidity Index | ||||
| 0 | Reference | |||
| 1 | 1.55 | 1.44 | 1.67 | <0.001 |
| ≥ 2 | 1.89 | 1.66 | 2.15 | <0.001 |
| Surgical treatment | ||||
| No surgery | Reference | |||
| Radical prostatectomy | 0.28 | 0.26 | 0.30 | <0.001 |
| Other treatment | 0.88 | 0.78 | 1.00 | 0.055 |
| Unknown | 1.03 | 0.46 | 2.30 | 0.9 |
| Analytic stage group | ||||
| I | Reference | |||
| II | 1.82 | 1.64 | 2.03 | <0.001 |
| III | 4.62 | 4.10 | 5.21 | <0.001 |
| IV | 17.65 | 15.84 | 19.65 | <0.001 |