Characteristics of study participants
| Median (range) | Tobacco-only males (n = 93) | Tobacco-only females (n = 155) | Cannabis and tobacco males (n = 150) | Cannabis and tobacco females (n = 102) |
|---|---|---|---|---|
| Age, years | 47 (24–73) | 43 (17–68) | 38 (18–63) | 36.5 (22–63) |
| BMI, kg/m2 | 24.9 (17–47.8) | 26.4 (16.9–55) | 23.1 (15.2–47.4) | 23.7 (15.2–48.2) |
| Age of first smoking tobacco | 15 (7–31) | 15 (8–39) | 14 (5–25) | 14 (8–36) |
| Tobacco pack-yearsa | 30 (5–116) | 24 (5–70) | 23.5 (2.4–113.3) | 20.4 (3.6–88.5) |
| Age of first smoking cannabis | n/a | n/a | 15 (7–40) | 16 (11–45) |
| Cannabis joint-years | n/a | n/a | 104.5 (1.0–1050) | 53.2 (1.0–325) |
| SIMD deprivation | 1.0 (0.1–6.1) | 0.6 (0–1–6.1) | 0.6 (0.1–5.7) | 0.6 (0.1–6.4) |
↵a Includes additional tobacco used to make a joint. BMI = body mass index. SIMD = Scottish Index of Multiple Deprivation (the Scottish Government official tool for identifying those places in Scotland suffering from deprivation).