TABLE 1

Selected baseline characteristics of the trial participants

Intervention (EarlyCDT-Lung test)Control (standard clinical care)
Subjects60886121
Age at randomisation years
 50–541393 (22.9)1409 (23.0)
 55–591562 (25.7)1531 (25.0)
 60–641300 (21.4)1318 (21.5)
 65–691179 (19.4)1203 (19.7)
 70–75654 (10.7)660 (10.8)
Sex
 Male3095 (50.8)3129 (51.1)
 Female2993 (49.2)2992 (48.9)
SIMD quintile
 1 (most deprived)1751 (28.8)1726 (28.2)
 21431 (23.5)1420 (23.2)
 31108 (18.2)1121 (18.3)
 4966 (15.9)1002 (16.4)
 5782 (12.8)792 (12.9)
 No information50 (0.8)60 (1.0)
Smoking status
 Current smoker3199 (52.5)3178 (51.9)
 Ex-smoker2889 (47.5)2943 (48.1)
  Quit ≥1 week2207 (36.3)2283 (37.3)
  Quit ≥6 months1998 (32.8)2083 (34.0)
 Pack-years38.4±18.738.0±18.5
 Family history1550 (25.5)1614 (26.4)
Comorbidity
 COPD306 (5.0)287 (4.7)

Data are presented as n or n (%). SIMD: Scottish Index of Multiple Deprivation; COPD: chronic obstructive pulmonary disease.