Table 1.
Demographic and history data on the 8682 patients recruited to the trial
| Variables, measures | Immediate pathway | Standard pathway |
| Total patients | 4096 | 4586 |
| Age (years) | ||
| Median, IQR | 53 (39, 65) | 53 (40, 65) |
| Mean, SD | 53 (17) | 53 (17) |
| Sex | ||
| Female | 2214 (54.1) | 2491 (54.3) |
| Male | 1882 (45.9) | 2095 (45.7) |
| Previous X-ray | ||
| Yes | 2297 (56.1) | 2583 (56.3) |
| No | 1799 (43.9) | 2003 (43.7) |
| Previous CT scan | ||
| Yes | 307 (7.5) | 334 (7.3) |
| No | 3789 (92.5) | 4252 (92.7) |
| Smoking status | ||
| Current | 555 (13.6) | 650 (14.2) |
| Former | 315 (7.7) | 386 (8.4) |
| Never | 255 (6.2) | 260 (5.7) |
| Unknown | 2971 (72.5) | 3290 (71.7) |