Table 3.
Multivariate analysis of the association between treatment method and mortality.
| Exposure | Hazard Ratio (95% CI) p-value |
||
|---|---|---|---|
| Non-adjusted | Adjusted I | Adjusted II | |
| All-cause mortality | |||
| Treatment | |||
| Surgery only | 1 | 1 | 1 |
| Radiation only | 1.93 (1.79, 2.08) <0.0001 | 1.88 (1.74, 2.03) <0.0001 | 1.97 (1.81, 2.14) <0.0001 |
| Surgery + Radiation | 1.61 (1.23, 2.12) 0.0006 | 1.58 (1.20, 2.08) 0.0010 | 1.29 (0.98, 1.70) 0.0666 |
| No treatment | 4.23 (3.90, 4.59) <0.0001 | 4.19 (3.86, 4.56) <0.0001 | 4.37 (3.98, 4.79) <0.0001 |
| Cause of death | |||
| Lung cancer-specific mortality | |||
| Surgery only | 1 | 1 | 1 |
| Radiation only | 1.49 (1.40, 1.60) <0.0001 | 1.47 (1.37, 1.57) <0.0001 | 1.22 (1.13, 1.32) <0.0001 |
| Surgery + Radiation | 0.98 (0.72, 1.32) 0.8811 | 0.96 (0.71, 1.30) 0.7889 | 0.92 (0.68, 1.25) 0.5969 |
| No treatment | 1.90 (1.73, 2.08) <0.0001 | 1.89 (1.72, 2.07) <0.0001 | 1.77 (1.60, 1.97) <0.0001 |
Non-adjusted model adjusted for: None. Adjusted model I adjusted for: Age; Race; Sex. Adjusted model II adjusted for: Age; Race; Sex; Year of diagnosis; Primary site; Grade; Laterality; Histology; Stage; T stage; N stage; Sequence number; Number of tumors; Marital status; Chemotherapy.