Baseline characteristics of the study population
| Characteristic | Patients | Controls |
| All, n | 21 982 | 2 19 816 |
| Men, n (%) | 11 332 (51.6) | 1 13 319 (51.6) |
| 1970s cohort, n (%) | 7535 (34.3) | 75 350 (34.3) |
| 1980s cohort, n (%) | 9126 (41.5) | 91 266 (41.5) |
| 1990s cohort, n (%) | 5321 (24.2) | 53 200 (24.2) |
| Born in Sweden, % | 91.6 | 92 |
| Mean follow-up age, years | 26.6 | 28.5 |
| Median follow-up age, years | 26.2 | 27.5 |