Table to compare smokers and non-smokers (ex or never)
| Variable Mean (SD) | Non-smokers (N=244) | Smokers (N=171) | p-value |
| Age yrs | 69.4 (9.6) | 65.5 (10.0) | 0.005 |
| TNM Stage | 3.12 (0.98) | 3.20 (0.92) | 0.496 |
| Tumour staging | 2.45 (1.13) | 2.83 (1.20) | 0.024 |
| WHO Performance Status | 1.00 (0.84) | 1.20 (0.89) | 0.026 |
| Total EQ5D | 7.58 (2.19) | 7.91 (1.97) | 0.140 |