Table 3. Multivariate Cox analysis for OS and CSS among PSM population.
| CSS | OS | ||||
|---|---|---|---|---|---|
| Adjust HR (95% HR) | P value | Adjust HR (95% HR) | P value | ||
| Age | |||||
| ≤65 | Reference | Reference | |||
| 65-75 | 1.21 (1.12–1.30) | <0.001 | 1.24 (1.15–1.33) | <0.001 | |
| ≥75 | 1.42 (1.28–1.57) | <0.001 | 1.48 (1.35–1.64) | <0.001 | |
| Gender | |||||
| Male | Reference | Reference | |||
| Female | 0.82 (0.77–0.88) | <0.001 | 0.81 (0.76–0.87) | <0.001 | |
| Race | |||||
| White | Reference | Reference | |||
| Black | 1.01 (0.91–1.13) | 0.855 | 1.06 (0.96–1.11) | 0.281 | |
| Other | 0.66 (0.57–0.76) | <0.001 | 0.68 (0.60–0.78) | <0.001 | |
| T stage | |||||
| T1 | Reference | Reference | |||
| T2 | 1.06 (0.97–1.15) | 0.216 | 1.06 (0.98–1.15) | 0.156 | |
| T3 | 1.32 (1.20–1.45) | <0.001 | 1.30 (1.18–1.42) | <0.001 | |
| T4 | 1.55 (1.41–1.71) | <0.001 | 1.53 (1.40–1.68) | <0.001 | |
| N stage | |||||
| N0 | Reference | Reference | |||
| N1 | 1.37 (1.24–1.51) | <0.001 | 1.34 (1.22–1.48) | <0.001 | |
| N2 | 1.42 (1.32–1.54) | <0.001 | 1.40 (1.30–1.51) | <0.001 | |
| N3 | 1.56 (1.35–1.81) | <0.001 | 1.56 (1.35–1.79) | <0.001 | |
| M stage | |||||
| M1a | Reference | Reference | |||
| M1b | 1.56 (1.44–1.68) | <0.001 | 1.48 (1.37–1.59) | <0.001 | |
| Tumor position | |||||
| Bronchus | Reference | Reference | |||
| Lobe | 1.01 (0.83–1.23) | 0.945 | 1.03 (0.85–1.24) | 0.763 | |
| Over lapping lesion | 1.31 (0.99–1.74) | 0.061 | 1.33 (1.02–1.75) | 0.038 | |
| Differentiation | |||||
| Well | Reference | Reference | |||
| Moderately | 1.26 (1.09–1.45) | 0.002 | 1.28 (1.12–1.47) | <0.001 | |
| Poorly | 1.58 (1.38–1.82) | <0.001 | 1.60 (1.40–1.83) | <0.001 | |
| Undifferentiated | 1.96 (1.59–2.40) | <0.001 | 1.97 (1.61–2.40) | <0.001 | |
| Chemotherapy | |||||
| None/unknown | Reference | Reference | |||
| Yes | 0.57 (0.53–0.61) | <0.001 | 0.55 (0.51–0.58) | <0.001 | |
| Surgery to other sites | |||||
| None/unknown | Reference | Reference | |||
| Yes | 0.77 (0.69–0.84) | <0.001 | 0.76 (0.70–0.83) | <0.001 | |
| Surgery to primary site | |||||
| None/unknown | Reference | Reference | |||
| Yes | 0.49 (0.46–0.52) | <0.001 | 0.51 (0.47–0.54) | <0.001 | |
NSCLC, non-small cell lung cancer; PSM, propensity score matching; SD, standard deviation; OS, overall survival; CSS, cancer specific survival; HR, hazard ratio.