Participant characteristics of deployed Nordic military veterans
| Denmark | Finland* | Norway | Sweden | |
| No of participants | 27 442 | 15 002 | 23 422 | 17 718 |
| Deployment years | 1992–2010 | 1990–2010 | 1992–2010 | 1992–2010 |
| Age at first deployment (years) | ||||
| Mean (SD) | 27.9 (8.6) | Not reported | 27.3 (8.0) | 26.7 (6.5) |
| Median (IQR) | 24.2 (22.1–30.3) | Not reported | 24.5 (21.5–30.3) | 24.5 (22.1–28.7) |
| Range | 18–66 | Not reported | 18–66 | 19–58 |
| Sex | ||||
| Men, n (%) | 26 011 (95) | 14 584 (97) | 22 004 (94) | 17 216 (97) |
| Women, n (%) | 1431 (5) | 418 (3) | 1418 (6) | 502 (3) |
| Deployment duration for all deployments (months) | ||||
| Mean (SD) | 5.6 (1.98) | Not reported | 3.9 (2.9) | 6.0 (2.0) |
| Median (IQR) | 6.1 (5.7–6.1) | Not reported | 3.5 (1.0–6.3) | 6.1 (5.7–6.8) |
| Range | 0.2–49.7 | Not reported | 0.03–39.5 | 0.03–30.3 |
| Follow-up† (years) | ||||
| Mean (SD) | 14.8 (5.8) | 17.0 (5.5) | 13.5 (5.9) | |
| Median (IQR) | 15.1 (9.4–20.4) | 17.5 (12.6–21.9) | 13.6 (8.1–19.2) | |
| Range | 0–24 | 0–25 | 0–23 |
*Data from the publication by Laukkala et al.2
†Follow-up started the day of return from first deployment.