Table 1.
Baseline characteristics of Pan-Canadian Early Detection of Lung Cancer Study participants
| Characteristics | All enrolled (n=1237) |
| Age, mean (SD) | 62.9 (6.1) |
| Gender (males), n (%) | 558 (45.1) |
| Race*, n (%) | |
| Caucasian | 1201 (97.1) |
| Asian | 15 (1.2) |
| Black or African Canadian | 7 (0.6) |
| Aboriginal | 4 (0.3) |
| Pacific Islander | 0 (0.0) |
| Other | 10 (0.8) |
| Education, n (%) | |
| Eighth grade or less | 32 (2.3) |
| Ninth to 12th grade | 153 (12.4) |
| High school graduate | 337 (27.2) |
| Bachelor’s degree | 107 (8.7) |
| Technical/vocational/school certificate | 260 (21.0) |
| Associate degree/some college | 205 (16.6) |
| Advanced Degree | 144 (11.6) |
| Smoking habits | |
| Current smokers, n (%) | 768 (62.1) |
| Pack-years, median (IQR, range) | 51.3 (21.6, 2.2–230) |
| Smoking duration (years), mean (SD) | 43.9 (6.1) |
| Alcohol consumption | |
| Current regular drinkers†, n (%) | 961 (77.7) |
| Family history of lung cancer, n (%) | 392 (31.7) |
| Being worried about getting lung cancer, n (%) | |
| Rarely or never | 267 (21.6) |
| Sometimes | 656 (53.0) |
| Often | 235 (19.0) |
| All of the time | 75 (6.1) |
| Scan results at baseline, n (%) | |
| Positive | 279 (22.6) |
| Negative | 958 (77.4) |
| Lung cancer risk score, median (IQR, range) | 3.5 (2.9, 2.0–33.5) |
*Missing, n (%)=5 (0·2).
†Regular alcohol consumption: having more than one drink per week for a period of 6 months or more. Missing, n=11.