TABLE 2.
Unweighted Multivariable Cox Proportional Hazards Model of the Association Between Treatment and 10-Year Mortalitya
| Variable | Reference | HR (95% CI) | P |
|---|---|---|---|
| Treatment 6 mo after diagnosis | Yes vs no (reference) | 0.70 (0.58-0.85) | <.01 |
| Multiple chronic conditions at baseline | Yes vs no (reference) | 1.72 (1.44-2.05) | <.01 |
| Age | 1.07 (1.06-1.08) | <.01 | |
| Sex | Female vs male (reference) | 0.73 (0.61-0.89) | <.01 |
| Health system | KPNW vs Geisinger (reference) | 1.11 (0.94-1.30) | .23 |
| Race/ethnicity | Nonwhite vs white (reference) | 1.35 (0.85-2.14) | .21 |
| AJCC stage of disease/grade | 0A/high vs 0A/low (reference) | 1.24 (0.99-1.53) | .05 |
| 0IS/high vs 0A/low (reference) | 1.01 (0.71-1.43) | .98 | |
| I/high vs 0A/low (reference) | 1.58 (1.33-1.89) | <.01 |
Abbreviations: 95% CI, 95% confidence interval; AJCC, American Joint Committee on Cancer; HR, hazard ratio; KPNW, Kaiser Permanente Northwest.
a
The analysis excluded 18 patients for whom information regarding stage of disease and grade was missing.