From: The effect of the look-back period for estimating incidence using administrative data
Year | Prevalent cases (n) | Look-back period (years) | Estimated cases (n, %)2 | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | |||
2003 | 650 | 54 8.3 | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | 116 17.8 |
2004 | 648 | 77 11.9 | 83 12.8 | Â | Â | Â | Â | Â | Â | Â | Â | Â | 130 20.1 |
2005 | 849 | 105 12.4 | 130 15.3 | 140 16.5 | Â | Â | Â | Â | Â | Â | Â | Â | 191 22.5 |
2006 | 823 | 111 13.5 | 143 17.4 | 155 18.8 | 161 19.6 | Â | Â | Â | Â | Â | Â | Â | 204 24.8 |
2007 | 925 | 162 17.5 | 190 20.5 | 202 21.8 | 211 22.8 | 218 23.6 | Â | Â | Â | Â | Â | Â | 251 27.1 |
2008 | 1010 | 170 16.8 | 204 20.2 | 225 22.3 | 234 23.2 | 238 23.6 | 240 23.8 | Â | Â | Â | Â | Â | 298 29.5 |
2009 | 1195 | 241 20.2 | 287 24.0 | 309 25.9 | 332 27.8 | 340 28.5 | 348 29.1 | 352 29.5 | Â | Â | Â | Â | 380 31.8 |
2010 | 1393 | 331 23.8 | 397 28.5 | 422 30.3 | 444 31.9 | 456 32.7 | 464 33.3 | 471 33.8 | 473 34.0 | Â | Â | Â | 476 34.2 |
2011 | 1590 | 367 23.1 | 437 27.5 | 471 29.6 | 490 30.8 | 507 31.9 | 519 32. 6 | 524 33.0 | 530 33.3 | 530 33.3 | Â | Â | 580 36.5 |
2012 | 1664 | 444 26.7 | 533 32.0 | 573 34.4 | 600 36.1 | 609 36.6 | 617 37 .1 | 622 37.4 | 624 37.5 | 626 37.6 | 628 37.7 | Â | 646 38.8 |
2013 | 1762 | 487 27.6 | 596 33.8 | 646 36.7 | 671 38.1 | 689 39.1 | 699 39.7 | 711 40.4 | 721 40.9 | 724 41.1 | 729 41.4 | 733 41.6 | 725 41.2 |