Table 1.
Selected baseline characteristics for lung cancer cases and non-cases in the UK Biobank, 2006–2010
| Characteristics | Cases (n = 1449) | Non-cases (n = 307 041) | P-value |
|---|---|---|---|
| Age, mean (SD) | 62.5 (4.8) | 60.0 (5.4) | <0.001 |
| Sex, no. (%) | <0.001 | ||
| Female | 662 (45.7) | 163 665 (53.3) | |
| Male | 787 (54.3) | 143 386 (46.7) | |
| Education, no. (%) | <0.001 | ||
| College or university degree | 232 (16.0) | 97 266 (31.7) | |
| Some professional qualifications | 364 (25.1) | 82 897 (27.0) | |
| Secondary education | 259 (17.9) | 65 102 (21.2) | |
| None of the above | 594 (41.0) | 61 776 (20.1) | |
| Smoking status, no. (%) | <0.001 | ||
| Never smokers | 179 (12.4) | 160 908 (52.4) | |
| Former smokers | 668 (46.1) | 117 416 (38.2) | |
| Current smokers | 602 (41.5) | 28 717 (9.35) | |
| Pack-years for smokers, mean (SD)a | 42.1 (25.2) | 25.0 (19.6) | <0.001 |
| PRS for lung cancer, mean (SD) | 1.97 (0.4) | 1.90 (0.4) | <0.001 |
aParticipants who never smoked (n = 161 087) or had a missing value of pack-years (n = 50 093) were excluded.