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. Author manuscript; available in PMC: 2011 Jan 27.
Published in final edited form as: J Am Acad Dermatol. 2009 Mar;60(3):394–401. doi: 10.1016/j.jaad.2008.10.062

Table II.

Overall annual incidence of psoriasis over time (per 100,000)

Incidence rate (per 100,000)* and 95% confidence interval
Time period Dermatology confirmed Overall
1970–1974 38.5 (30.8, 46.1) 50.8 (41.9, 59.6)
1975–1979 38.9 (31.8, 46.1) 53.2 (44.8, 61.6)
1980–1984 69.2 (59.9, 78.5) 80.9 (70.8, 91.1)
1985–1989 65.6 (57.1, 74.2) 78.9 (69.5, 88.4)
1990–1994 66.2 (58.0, 74.4) 88.7 (79.1, 98.3)
1995–1999 79.1 (70.6, 87.7) 100.5 (90.8, 110.2)
Total 62.3 (58.8, 65.8) 78.9 (75.0, 82.9)
*

Age- and sex-adjusted to the U.S. white 2000 population.