Table 3. Univariate and multivariate analysis for potential confounding factors for death from heart disease for patients with localized or regional disease.
| Variables | Univariate |
Multivariate |
|||||
|---|---|---|---|---|---|---|---|
| HR | 95% CI | P value | HR | 95% CI | P value | ||
| RT | 1.53 | 1.36-1.73 | <0.0001 | 1.6 | 1.42-1.81 | <0.0001 | |
| Age | 1.69 | 1.60-1.79 | <0.0001 | 1.74 | 1.64-1.84 | <0.0001 | |
| Gender | 1.04 | 0.91-1.18 | 0.59 | ||||
| Race | 0.87 | 0.80-0.94 | 0.0003 | 0.84 | 0.78-0.91 | 0.0001 | |
| Extent of disease | 0.84 | 0.75-0.95 | 0.004 | 0.92 | 0.82-1.03 | 0.12 | |
| Time period of diagnosis | 0.75 | 0.70-0.81 | <0.0001 | 0.73 | 0.67-0.78 | <0.0001 | |
| Known comorbid conditions | 1.84 | 1.33-2.55 | 0.0003 | 1.3 | 0.93-1.80 | 0.12 | |
HR, hazard ratio; CI, confidence interval; RT, radiation therapy.