Year | Population* | SpA cohort | Non-SpA cohort | ||||||||
Cases | Crude rate (/100,000/year) | Adjusted rate† (/100,000/year) | 95% CI | Cases | Crude rate (/100,000/year) | Adjusted rate† (/100,000/year) | 95% CI | ||||
1999 | 265 803 | 48 | 18.06 | 19.87 | 14.58 | 26.63 | 2 | 0.75 | 0.76 | 0.10 | 3.29 |
2000 | 268 777 | 56 | 20.84 | 22.09 | 16.60 | 29.03 | 2 | 0.74 | 0.83 | 0.10 | 3.40 |
2001 | 271 640 | 64 | 23.56 | 23.99 | 18.38 | 30.99 | 1 | 0.37 | 0.37 | 0.00 | 2.63 |
2002 | 277 168 | 67 | 24.17 | 25.28 | 19.54 | 32.38 | 2 | 0.72 | 0.97 | 0.10 | 3.64 |
2003 | 283 095 | 56 | 19.78 | 21.02 | 15.82 | 27.57 | 4 | 1.41 | 1.57 | 0.42 | 4.30 |
2004 | 288 220 | 57 | 19.78 | 21.04 | 15.88 | 27.49 | 3 | 1.04 | 1.04 | 0.20 | 3.42 |
2005 | 294 250 | 31 | 10.54 | 11.21 | 7.59 | 16.10 | 3 | 1.02 | 1.11 | 0.25 | 3.51 |
2006 | 299 139 | 35 | 11.70 | 12.89 | 8.98 | 18.05 | 2 | 0.67 | 0.71 | 0.10 | 2.79 |
2007 | 305 145 | 42 | 13.76 | 14.75 | 10.60 | 20.10 | 2 | 0.66 | 0.72 | 0.10 | 2.76 |
2008 | 310 053 | 32 | 10.32 | 11.10 | 7.59 | 15.76 | 6 | 1.94 | 2.15 | 0.77 | 4.78 |
2009 | 312 471 | 63 | 20.16 | 21.53 | 16.50 | 27.61 | 2 | 0.64 | 0.74 | 0.10 | 2.75 |
2010 | 313 760 | 64 | 20.40 | 21.51 | 16.56 | 27.51 | 3 | 0.96 | 1.10 | 0.20 | 3.25 |
2011 | 314 859 | 43 | 13.66 | 14.38 | 10.43 | 19.40 | 5 | 1.59 | 1.66 | 0.54 | 3.96 |
2012 | 315 013 | 33 | 10.48 | 10.90 | 7.49 | 15.36 | 2 | 0.63 | 0.68 | 0.10 | 2.47 |
2013 | 313 913 | 34 | 10.83 | 11.12 | 7.70 | 15.55 | 6 | 1.91 | 1.97 | 0.71 | 4.29 |
2014 | 312 980 | 36 | 11.50 | 11.64 | 8.17 | 16.10 | 14 | 4.47 | 4.51 | 2.46 | 7.57 |
2015 | 312 596 | 31 | 9.92 | 9.92 | 6.73 | 14.07 | 9 | 2.88 | 2.88 | 1.33 | 5.48 |
1999–2015 | 5 058 880 | 792 | 15.66 | 16.72 | 68 | 1.34 | 1.40 |
*Estimated population of SpA.22
†Adjusted by sex and age.
SpA, spondyloarthritis.