Description of cases and controls (n=1042)
| Cases (n = 247) | Controls (n = 795) | ||||||
|---|---|---|---|---|---|---|---|
| Median | Min | Max | Median | Min | Max | ||
| Year of birth | 1928 | 1901 | 1958 | 1929 | 1907 | 1959 | |
| Age at first exposure (years) | 22 | 11 | 61 | 24 | 13 | 60 | |
| Years since first exposure | 40 | 7 | 69 | 41 | 5 | 68 | |
| Duration of exposure (years) | 30 | 3 | 54 | 33 | 2 | 53 | |
| Year of first exposure | 1950 | 1922 | 1983 | 1953 | 1922 | 1990 | |