Table 3.
Predictors of Overall Survival: Multivariable Analysis Results
| Factor | Hazard Ratio | 95% CI |
|---|---|---|
| Patient factors | ||
| Age, years* | ||
| < 40 | 1.00 | |
| 40-49 | 0.85 | 0.70 to 1.03 |
| 50-59 | 0.92 | 0.77 to 1.11 |
| 60-69 | 0.86 | 0.70 to 1.05 |
| ≥ 70 | 1.18 | 0.95 to 1.46 |
| Race* | ||
| Black | 1.00 | |
| White | 0.73 | 0.63 to 0.84 |
| Other | 0.58 | 0.40 to 0.83 |
| Charlson-Deyo score* | ||
| 0 | 1.00 | |
| 1 | 1.13 | 0.98 to 1.31 |
| 2 | 1.35 | 1.02 to 1.77 |
| Primary payer* | ||
| Public insurance | 1.00 | |
| Private insurance | 0.82 | 0.72 to 0.93 |
| Not insured | 0.96 | 0.73 to 1.26 |
| Tumor factors | ||
| Grade* | ||
| Well differentiated | 1.00 | |
| Moderately differentiated | 0.93 | 0.65 to 1.33 |
| Poorly differentiated | 1.78 | 1.25 to 2.51 |
| Undifferentiated | 1.74 | 1.07 to 2.80 |
| Nodal stage* | ||
| 0 | 1.00 | |
| 1 | 1.50 | 1.28 to 1.77 |
| 2 | 2.15 | 1.84 to 2.50 |
| 3 | 2.92 | 2.50 to 3.43 |
| Treatment factors | ||
| Treatment facility type* | ||
| Academic/research program | 1.00 | |
| Community cancer program | 1.37 | 1.18 to 1.59 |
| Comprehensive community cancer program | 1.17 | 1.04 to 1.31 |
| Other specified types of cancer programs | 1.04 | 0.57 to 1.89 |
| Treatment received* | ||
| Surgery + RT + chemo | 1.00 | |
| Surgery + chemo | 1.64 | 1.46 to 1.84 |
| Surgery + RT | 1.47 | 0.96 to 2.24 |
| Surgery alone | 2.28 | 1.80 to 2.89 |
Abbreviations: chemo, chemotherapy; RT, radiation therapy.
*
P < .05.