Table 3.

Time trends in annual incidence (per 100,000) of psoriatic arthritis* between January 1, 1970, and December 31, 1999, in Olmsted County, Minnesota.

MaleFemaleTotal
Time PeriodnRate (95% CI)nRate (95% CI)nRate
1970–1979124.4 (1.9, 7.0)82.6 (0.7, 4.5)203.6 (2.0, 5.2)
1980–1989289.2 (5.6, 12.9)185.0 (2.6, 7.4)467.0 (4.9, 9.1)
1990–19995011.8 (8.5, 15.1)317.6 (4.9, 10.3)819.8 (7.6, 11.9)
  • * According to the CASPAR criteria.

  • Age-adjusted to the 2000 US White population.

  • †† Age- and sex-adjusted to the 2000 US White population.