Table 1.
Primary care consultation incidence of OA: UK, 1992–2013
| Year | Clinical OA | OA | ||||||
|---|---|---|---|---|---|---|---|---|
| Cases | Person-years | Crude incidence | Age–sex-standardized incidence | Cases | Person-years | Crude incidence | Age–sex-standardized incidence | |
| IR (95% CI) | IR (95% CI) | IR (95% CI) | IR (95% CI) | |||||
| 1992 | 2318 | 73 491 | 31.5 (30.3, 32.8) | 29.2 (28.8, 29.5) | 733 | 82 537 | 8.9 (8.2, 9.5) | 8.1 (7.9, 8.2) |
| 1993 | 11 101 | 322 990 | 34.4 (33.7, 35.0) | 30.8 (30.5, 31.2) | 3323 | 379 343 | 8.8 (8.5, 9.1) | 7.7 (7.5, 7.8) |
| 1994 | 20 590 | 648 338 | 31.8 (31.3, 32.2) | 28.4 (28.1, 28.7) | 6064 | 737 338 | 8.2 (8.0, 8.4) | 7.0 (6.9, 7.2) |
| 1995 | 24 091 | 774 073 | 31.1 (30.7, 31.5) | 27.9 (27.6, 28.2) | 7432 | 889 694 | 8.4 (8.2, 8.5) | 7.2 (7.0, 7.3) |
| 1996 | 28 019 | 893 210 | 31.4 (31.0, 31.7) | 28.3 (28.0, 28.6) | 9111 | 1 028 858 | 8.9 (8.7, 9.0) | 7.7 (7.5, 7.8) |
| 1997 | 31 163 | 974 392 | 32.0 (31.6, 32.3) | 28.8 (28.6, 29.1) | 10 350 | 1 110 627 | 9.3 (9.1, 9.5) | 8.1 (8.0, 8.2) |
| 1998 | 33 127 | 1 059 208 | 31.3 (30.9, 31.6) | 28.4 (28.1, 28.6) | 11 266 | 1 212 876 | 9.3 (9.1, 9.5) | 8.1 (7.9, 8.2) |
| 1999 | 33 820 | 1 127 813 | 30.0 (29.7, 30.3) | 27.2 (27.0, 27.4) | 12 101 | 1 280 607 | 9.4 (9.3, 9.6) | 8.2 (8.1, 8.3) |
| 2000 | 39 529 | 1 301 151 | 30.4 (30.1, 30.7) | 27.2 (27.0, 27.4) | 14 021 | 1 501 032 | 9.3 (9.2, 9.5) | 7.9 (7.8, 8.0) |
| 2001 | 48 723 | 1 510 687 | 32.3 (32.0, 32.5) | 28.7 (28.5, 28.8) | 16 731 | 1 735 259 | 9.6 (9.5, 9.8) | 8.0 (8.0, 8.1) |
| 2002 | 62 760 | 1 766 502 | 35.5 (35.2, 35.8) | 31.3 (31.2, 31.5) | 19 326 | 2 029 507 | 9.5 (9.4, 9.7) | 7.9 (7.8, 8.0) |
| 2003 | 83 876 | 2 117 343 | 39.6 (39.3, 39.9) | 35.0 (34.8, 35.2) | 24 269 | 2 445 042 | 9.9 (9.8, 10.1) | 8.3 (8.3, 8.4) |
| 2004 | 102 518 | 2 427 299 | 42.2 (42.0, 42.5) | 37.3 (37.1, 37.5) | 28 438 | 2 780 331 | 10.2 (10.1, 10.3) | 8.6 (8.6, 8.7) |
| 2005 | 112 689 | 2 662 777 | 42.3 (42.1, 42.6) | 37.4 (37.3, 37.6) | 30 828 | 3 092 892 | 10.0 (9.9, 10.1) | 8.5 (8.4, 8.6) |
| 2006 | 122 610 | 2 861 320 | 42.9 (42.6, 43.1) | 37.8 (37.6, 37.9) | 30 663 | 3 318 065 | 9.2 (9.1, 9.3) | 7.8 (7.7, 7.9) |
| 2007 | 132 437 | 2 966 799 | 44.6 (44.4, 44.9) | 39.5 (39.3, 39.7) | 31 174 | 3 450 533 | 9.0 (8.9, 9.1) | 7.6 (7.6, 7.7) |
| 2008 | 141 177 | 3 015 423 | 46.8 (46.6, 47.1) | 41.6 (41.4, 41.8) | 32 364 | 3 525 583 | 9.2 (9.1, 9.3) | 7.8 (7.7, 7.9) |
| 2009 | 145 550 | 3 005 688 | 48.4 (48.2, 48.7) | 42.9 (42.7, 43.1) | 31 889 | 3 549 708 | 9.0 (8.9, 9.1) | 7.6 (7.5, 7.7) |
| 2010 | 139 784 | 2 964 794 | 47.1 (46.9, 47.4) | 41.3 (41.2, 41.5) | 30 004 | 3 534 196 | 8.5 (8.4, 8.6) | 7.1 (7.0, 7.2) |
| 2011 | 138 460 | 2 914 140 | 47.5 (47.3, 47.8) | 41.4 (41.2, 41.6) | 29 448 | 3 495 697 | 8.4 (8.3, 8.5) | 7.0 (7.0, 7.1) |
| 2012 | 133 409 | 2 863 873 | 46.6 (46.3, 46.8) | 41.2 (41.0, 41.4) | 27 483 | 3 437 897 | 8.0 (7.9, 8.1) | 6.7 (6.7, 6.8) |
| 2013 | 128 502 | 2 695 583 | 47.7 (47.4, 47.9) | 40.5 (40.3, 40.7) | 25 145 | 3 191 331 | 7.9 (7.8, 8.0) | 6.3 (6.2, 6.4) |
Incidence rates are presented as age–sex standardized incidence (95% CI) per 1000 person-years, with mid-2013 UK population as standard population. IR: incidence rate.