Mean (SD) age (years) | 69 (10) | 67 (10) | 0.032 |
M/F (ratio) | 153/115 (1.33) | 200/43 (4.65) | <0.001 |
Risk factors | | | |
Smoker (%) | 142/257 (55%)† | 111/243 (46%) | <0.001 |
Former smoker (%) | 105/257 (41%)† | 99/243 (41%) |
Never smoker (%) | 10/257 (4%)† | 33/243 (13%) |
Median pack years§§§ | 45.5‡ | 45.0§ | 0.659¶¶¶ |
Occupational risk (%)* | 93/185 (50%)¶ | 69/226 (31%)** | <0.001 |
Family history of lung cancer | 20/149 (13%)†† | 37/239 (15%)‡‡ | 0.578 |
No of patients with co-morbidity (%) | 193/263 (73%)§§ | 156/243 (64%) | 0.026 |
Performance status 0–1 | 38% | 62% | <0.001 |
Performance status 2–4 | 62% | 38% | |
FEV1 (% predicted) | 63% (22)¶¶ | 78% (23)*** | <0.001 |
Source of referral to lung cancer specialist | | | |
GP, urgent/emergency | 64% | 61% | 0.502 |
GP, routine | 20% | 14% | 0.108 |
Other consultant | 16% | 23% | 0.076 |
Chest radiography screening | 0% | 2% | 0.018 |
Mode of presentation | | | |
Asymptomatic diagnosis by chest radiography | 17/253 (7%)††† | 47/223 (21%)‡‡‡ | |
Diagnosis by symptoms | 236/253 (93%)††† | 176/223 (79%)‡‡‡ | |