Sex and age groups | Incident cases | Person years in 1000 | Crude incidence rate per 1000 person years (95% CI) | Expected number of cases† | SIR (95% CI)‡ |
Men | |||||
25–39 | 10 | 3.1 | 3.2 (1.7 to 6.0) | 0.6 | 16.0 (8.6 to 29.7) |
40–49 | 33 | 2.1 | 16.1 (11.4 to 22.6) | 3.3 | 10.1 (7.2 to 14.2) |
50–59 | 34 | 1.3 | 25.6 (18.3 to 35.8) | 6.0 | 5.7 (4.1 to 7.9) |
60–69 | 24 | 0.7 | 33.7 (22.6 to 50.3) | 5.2 | 4.6 (3.1 to 6.8) |
70–79 | 11 | 0.3 | 42.7 (23.7 to 77.2) | 2.3 | 4.7 (2.6 to 8.5) |
80+ | 3 | 0.02 | 144.1 (46.5 to 446.7) | 0.1 | 25.9 (8.4 to 80.3) |
Total | 115 | 7.5 | 15.4 (12.8 to 18.5) | 17.6 | 6.5 (5.5 to 7.9) |
Women | |||||
25–39 | 2 | 3.5 | 0.6 (0.1 to 2.3) | 0.2 | 11.8 (2.9 to 47.1) |
40–49 | 12 | 2.4 | 5.1 (2.9 to 8.9) | 0.8 | 15.5 (8.8 to 27.2) |
50–59 | 18 | 1.9 | 9.4 (4.9 to 15.0) | 2.0 | 9.1 (5.7 to 14.4) |
60–69 | 19 | 1.1 | 17.5 (11.1 to 27.4) | 2.6 | 7.5 (4.8 to 11.7) |
70–79 | 11 | 0.4 | 26.6 (14.8 to 48.1) | 1.6 | 6.9 (3.8 to 12.4) |
80+ | 0 | 0.1 | 0 | 0.3 | – |
Total | 62 | 9.4 | 6.6 (5.1 to 8.5) | 7.4 | 8.4 (6.6 to 10.8) |
Statistically significant results in bold.
*Includes percutaneous coronary intervention and coronary artery bypass grafting.
†Age-standardised by indirect standardisation with reference rates for the total Norwegian population during 2001–2009 stratified by sex, calendar year and 1 year age groups.
SIR, standardised incidence ratio.