Table 1.
Baseline characteristics.
| Total n=4055 | Screen Arm (n=2028) | Control Arm (n=2027) |
|---|---|---|
| Sex# | ||
| Male | 1529 (75%) | 1507 (74%) |
| Female | 499 (25%) | 520 (26%) |
| Median age# at date of consent | 68 (IQR 65-71) | 68 (IQR 65-71) |
| Age 50-59 | 44 (2%) | 58 (3%) |
| Age 60-69 | 1295 (64%) | 1291 (64%) |
| Age 70-76 | 689 (34%) | 678 (33%) |
| Median IMD Rank | 17374 | 17704 |
| Median LLPv2 score (IQR) | 7.11 (5.58 – 10.08) | 7.35 (5.59 – 10.08) |
| Smoking history | ||
| Never smokers | 2 (0%) | 0 (0%) |
| Current smokers | 777 (38%) | 791 (39%) |
| Ex-smokers | 1249 (62%) | 1236 (61%) |
| Smoking duration ‡# | ||
| 10-19 years | 117 (6%) | 116 (6%) |
| 20+ years | 1895 (93%) | 1907 (94%) |
| Unknown | 14 (1%) | 4 (0%) |
| Asbestos exposure # | 763 (38%) | 763 (38%) |
| History of respiratory disease *# | 1056 (52%) | 1023 (50%) |
| History of solid tumour ⁎⁎# | 378 (19%) | 396 (20%) |
| Family history of lung cancer# | 498 (25%) | 554 (27%) |
| Early onset (before age 60) | 215 (11%) | 215 (11%) |
| Late onset (on or after age 60) | 283 (14%) | 339 (17%) |
‡
All smoking duration figures refer to current- and ex-smokers combined.
⁎
bronchitis, TB, pneumonia, COPD, or emphysema.
⁎⁎
cancers of brain, head & neck, oesophagus, breast, colon or “other”.
#
these factors contribute to the LLP risk score
Abbreviations: IMD = Index of Multiple Deprivation; IQR = inter quartile range.