Table 1 Study participant demographics, smoking status and 6-year lung cancer incidence.
SAIL cohort; age range 55–75 | |||
|---|---|---|---|
N = 574,196 | No lung cancer, N = 567,766 (98.89%) | Lung cancer, N = 6430 (1.11%) | P value for difference |
Age in years: mean (SD) missing values = 0 | 64.0 (6.1) | 66.5 (5.7) | <0.001 |
Gender, missing = 9 | <0.001 | ||
Males 291,772 | 278951 (98.7%) | 3464 (1.3%) | |
Females 282,415 | 288,806 (98.9%) | 2966 (1.1%) | |
WIMD quintiles missing=32,865 | <0.001 | ||
Q1 120,179 affluent | 119,364 (99.4%) | 815 (0.6%) | |
Q2 107,182 | 106,227 (99.1%) | 955 (0.9%) | |
Q3 115,736 | 114,459 (98.9%) | 1277 (1.1%) | |
Q4 102,298 | 100,885 (98.6%) | 1413 (1.4%) | |
Q5 95,936 deprived | 94,322 (98.3%) | 1614 (1.7%) | |
Smoking status; missing=12,037 | <0.001 | ||
Non-smoker 282,422 | 281,729 (99.8%) | 693 (0.2%) | |
Ex-smoker 123,724 | 121,891 (98.8%) | 1383 (1.2%) | |
Current smoker 156,463 | 152,269 (97.3%) | 4194 (2.7%) | |
UK Biobank cohort; age range 55–73 | |||
N = 137,918 | No lung cancer N = 137,262 (99.52%) | Lung cancer N = 656 (0.48%) | |
Age in years: mean (SD), missing values = 0 | 62.0 (4.1) | 63.4 (4.0) | <0.001 |
Gender, missing=0 | 0.002 | ||
Males 63,517 | 63,174 (99.4%) | 343 (0.5%) | |
Females 74,401 | 74,088 (99.6%) | 313 (0.4%) | |
Townsend quintiles, missing=0 | <0.001 | ||
Q1 29,112 Affluent | 29,023 (99.7%) | 89 (0.3%) | |
Q2 29,223 | 29,124 (99.7%) | 99 (0.3%) | |
Q3 29,476 | 29,366 (99.6%) | 110 (0.4%) | |
Q4 26,684 | 26,538 (99.4%) | 146 (0.6%) | |
Q5 23,423 deprived | 23,211 (99.1%) | 212 (0.9%) | |
Smoking status; missing=0 | <0.001 | ||
Non-smoker 73,949 | 73,723 (99.7%) | 226 (0.3%) | |
Ex-smoker 44,722 | 44,551 (99.6%) | 171 (0.4%) | |
Current smoker 19,247 | 18,988 (98.6%) | 259 (1.4%) | |
