Table 3.
Crude and age-standardised incidence over time per 1000 person-years
| Incidence | 1991 | 1993–1997 | 2000–2009 | 2011–2015 |
| Total | ||||
| Case (person-year) | – | 1114 (35 486) | 2571 (70 575) | 1434 (29 492) |
| Crude incidence (95% CI) | – | 31.3 (29.6 to 33.2) | 36.4 (35.0 to 37.8) | 48.6 (46.1 to 51.2) |
| Age-standardised incidence (95% CI)* | – | 40.8 (38.3 to 43.4) | 41.5 (39.9 to 43.2) | 48.6 (46.1 to 51.0) |
| Male | ||||
| Case (person-year) | – | 594 (17 530) | 1292 (32 524) | 699 (12 532) |
| Crude incidence (95% CI) | – | 33.8 (31.2 to 36.7) | 39.7 (37.6 to 41.9) | 55.7 (51.7 to 60.0) |
| Age-standardised incidence (95% CI)* | – | 46.2 (42.1 to 50.4) | 45.7 (43.0 to 48.3) | 55.7 (51.7 to 59.7) |
| Female | ||||
| Case (person-year) | – | 520 (17 956) | 1279 (38 051) | 735 (16 960) |
| Crude incidence (95% CI) | – | 28.9 (26.5 to 31.5) | 33.6 (31.8 to 35.5) | 43.3 (40.3 to 46.5) |
| Age-standardised incidence (95% CI)* | – | 36.5 (33.2 to 39.7) | 38.0 (35.9 to 40.1) | 43.3 (40.2 to 46.3) |
*Age-standardised incidence was calculated using the study sample in 2011–2015 as the standard population.