Table 5.
Multivariable Cox Proportional Hazards model for factors associated with survival in subgroup of patients with pathologic node-negative disease
| 95% Confidence Interval | ||||
|---|---|---|---|---|
| Variable | Hazard Ratio | Lower | Upper | p-value |
| Age (per year) | 1.02 | 1.01 | 1.04 | <0.001 |
| Female sex (reference: male) | 0.89 | 0.74 | 1.09 | 0.27 |
| Race (reference: White) | ||||
| Black | 1.10 | 0.74 | 1.64 | 0.62 |
| Year of diagnosis (per year) | 1.00 | 0.96 | 1.05 | 0.96 |
| Charlson-Deyo Comorbidity Index (reference: 0) | ||||
| 1 | 0.99 | 0.80 | 1.23 | 0.91 |
| 2+ | 1.46 | 1.12 | 1.91 | 0.005 |
| Insurance status (reference: private) | ||||
| Government | 1.17 | 0.91 | 1.49 | 0.22 |
| None | 0.89 | 0.28 | 2.87 | 0.85 |
| Academic center | 1.04 | 0.85 | 1.28 | 0.68 |
| Tumor size (per 10 mm) | 1.02 | 1.01 | 1.03 | 0.001 |
| Type of surgery (reference: lobectomy) | ||||
| Wedge resection | 1.37 | 1.07 | 1.75 | 0.01 |
| Segmentectomy | 0.94 | 0.55 | 1.58 | 0.81 |
| N=1141 | ||||