Table 1

Demographic and history data on the 8682 patients recruited to the trial

Variables, measuresImmediate pathwayStandard pathway
Total patients40964586
Age (years)
 Median, IQR53 (39, 65)53 (40, 65)
 Mean, SD53 (17)53 (17)
Sex
 Female2214 (54.1)2491 (54.3)
 Male1882 (45.9)2095 (45.7)
Previous X-ray
 Yes2297 (56.1)2583 (56.3)
 No1799 (43.9)2003 (43.7)
Previous CT scan
 Yes307 (7.5)334 (7.3)
 No3789 (92.5)4252 (92.7)
Smoking status
 Current555 (13.6)650 (14.2)
 Former315 (7.7)386 (8.4)
 Never255 (6.2)260 (5.7)
 Unknown2971 (72.5)3290 (71.7)