Overall | | 385 | 1592 | 24.2 | 899 | 4660 | 19.3 | 1.25 (1.11 to 1.41) |
Age | 17–49 | 51 | 281 | 18.2 | 73 | 809 | 9.0 | 2.02 (1.40 to 2.87) |
| 50–64 | 57 | 518 | 11.0 | 163 | 1504 | 10.8 | 1.02 (0.75 to 1.37) |
| 65–74 | 85 | 346 | 24.6 | 214 | 987 | 21.7 | 1.14 (0.88 to 1.45) |
| 75+ | 192 | 447 | 43.0 | 449 | 1361 | 33.0 | 1.30 (1.10 to 1.54) |
Sex | Male | 34 | 141 | 24.0 | 56 | 381 | 14.7 | 1.64 (1.06 to 2.49) |
| Female | 351 | 1450 | 24.2 | 843 | 4279 | 19.7 | 1.23 (1.08 to 1.39) |
Calendar year of follow-up | 1995–1999 | 52 | 220 | 23.6 | 101 | 616 | 16.4 | 1.45 (1.03 to 2.00) |
| 2000–2004 | 70 | 257 | 27.2 | 165 | 785 | 21.0 | 1.30 (0.98 to 1.71) |
| 2005–2009 | 97 | 424 | 22.9 | 279 | 1254 | 22.2 | 1.03 (0.81 to 1.29) |
| 2010–2016 | 166 | 690 | 24.1 | 354 | 2005 | 17.7 | 1.36 (1.13 to 1.64) |
Years after index date | 0–4 | 130 | 507 | 25.6 | 251 | 1512 | 16.6 | 1.55 (1.25 to 1.91) |
| 5–9 | 90 | 422 | 21.3 | 220 | 1212 | 18.1 | 1.18 (0.92 to 1.50) |
| 10–14 | 71 | 279 | 25.4 | 168 | 812 | 20.7 | 1.23 (0.92 to 1.61) |
| 15–19 | 41 | 166 | 24.7 | 101 | 484 | 20.8 | 1.19 (0.82 to 1.69) |
| 20+ | 53 | 218 | 24.4 | 159 | 640 | 24.8 | 0.99 (0.72 to 1.33) |