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| Characteristic | Patients, N = 100 (%) | Controls, N = 137 (%) |
|---|---|---|
| Sex | ||
| Male | 42 (42) | 56 (41) |
| Female | 58 (58) | 81 (59) |
| Age (y) | ||
| 1–4 | 4 (4) | 6 (4) |
| 5–9 | 1 (1) | 2 (2) |
| 10–19 | 3 (3) | 5 (4) |
| 20–29 | 13 (13) | 18 (13) |
| 30–39 | 9 (9) | 13 (10) |
| 40–49 | 15 (15) | 18 (13) |
| 50–59 | 26 (26) | 32 (23) |
| >60 | 29 (29) | 43 (31) |
| Median age (y) | 51 | 51 |
| Municipality | ||
| Helsinki | 35 (35) | 47 (34) |
| Kuopio | 44 (44) | 62 (45) |
| Joensuu | 21 (21) | 28 (20) |
