Table 2.
Period | N | Cases | Risk years | Risk per 1000 years | 95% CI Risk per 1000 years | Mean age in risk time | Age range |
---|---|---|---|---|---|---|---|
1968–2012 | 1132 | 271 | 26,111 | 10.4 | 9.2–11.7 | 71.2 | 50.3–98.8 |
1980–2012 | 773 | 174 | 11,254 | 15.5 | 13.2–17.9 | 77.4 | 62.4–98.8 |
Women born in 1942 and 1954 were excluded.