Table 1

Comparison of attendees and non-attendees of the second (T1) screening round

VariableT1 Screening roundP values
AttendeesNon- attendees
No of attendees (%)1194129
Mean age (years±SD)64.7 (5.4)64.2 (5.6)0.34
Sex M/F (F%)587/607 (50.8)65/64 (49.6)0.79
Median IMD rank (IQR)2848 (3615)2908 (4195)0.79
BMI (±SD)28.5 (5.4)28.3 (5.7)0.73
Lung cancer risk (PLCOM2012±SD)4.8 (3.8)5.4 (4.7)0.13
Education (%)Less than ‘O’ level822 (68.8)93 (72.1)0.58
‘O’ level213 (17.8)24 (18.6)
‘A’ level44 (3.7)3 (2.3)
University/college77 (6.4)5 (3.9)
University degree26 (2.2)4 (3.1)
Postgraduate/professional12 (1.0)0
Smoking status (%)Current604 (50.6)82 (63.6)0.005
Former590 (49.4)47 (36.4)
Smoking exposure (mean±SD)Duration (years)43.4 (8.3)45.4 (7.0)0.008
Cigarettes/day24.1 (12.8)23.9 (12.5)0.83
Pack-years51.2 (25.9)53.4 (28.6)0.37
Spirometry (mean±SD)FEV12.16 (0.7)2.08 (0.7)0.26
% predicted FEV184.9 (24.5)81.0 (21.6)0.09
FVC3.17 (1.0)3.10 (1.0)0.44
% predicted FVC100.4 (24.6)96.3 (23.7)0.07
FEV1:FVC ratio67.9 (10.7)67.6 (12.3)0.75
Airflow obstructionYes (%)588 (49.6)63 (53.1)0.45
COPD/emphysemaYes (%)386 (32.2)37 (28.7)0.40
FH lung cancerYes (%)326 (27.3)32 (24.8)0.54
MRC Dyspnoea Score (%)1781 (65.4)72 (55.8)0.13
2261 (21.9)32 (24.8)
398 (8.2)14 (10.9)
453 (4.4)11 (8.5)
51 (0.1)0
Performance status (%)0655 (54.9)60 (46.5)0.12
1403 (33.8)46 (35.7)
2116 (9.7)19 (14.7)
320 (1.7)4 (3.1)
400
  • BMI, Body Mass Index; FH, family history; IMD, Index of Multiple Deprivation; MRC, Medical Research Council.