The occurrence of psoriatic arthritis in Denmark.

Annals of the Rheumatic Diseases
O B PedersenP Junker

Abstract

To apply and compare different classification criteria on a representative nationwide sample of psoriatic arthritis (PsA) twins and to estimate the prevalence and incidence of PsA. The study comprised three Danish nationwide twin cohorts. In 1994 37 388 Danish twin individuals and in 2002 46 418 twin individuals received a questionnaire, including questions on rheumatic diseases. Twins reporting PsA and their co-twins were classified according to the Moll and Wright and CASPAR (ClASsification criteria for Psoriatic ARthritis) criteria based on interview, clinical examination and scrutiny of medical records. 228 twin individuals reported PsA and 164 (72%) participated in clinical validation. By using the Moll and Wright and CASPAR criteria, 54 and 50 cases were diagnosed with PsA respectively. The positive predictive value of self-reported PsA was 31%. According to the Moll and Wright and CASPAR criteria the prevalence was 0.15% (95% CI: 0.13%, 0.22%) and 0.14% (95% CI: 0.11%, 0.19%) respectively. The annual incidence rate based on new self-reported cases in 2002 was 6/100 000 person-years (95% CI: 3/100 000 person-years, 11/100 000 person-years). The positive predictive value of self-reported PsA was 31%. The prevalence and inc...Continue Reading

Citations

Aug 29, 2009·Rheumatology·Lai-Shan TamEdmund K Li
Dec 26, 2009·Journal of Autoimmunity·Vinod Chandran, Siba P Raychaudhuri
Oct 18, 2015·Rheumatic Diseases Clinics of North America·Alexis Ogdie, Pamela Weiss
May 3, 2013·Pharmacoepidemiology and Drug Safety·Maryam M AsgariLisa J Herrinton
Mar 20, 2016·The Journal of Dermatology·Toshiyuki YamamotoUNKNOWN Working Group of the Epidemiological Survey in the Japanese Society for Psoriasis Research
Jun 17, 2016·Arthritis Research & Therapy·Natasja Stæhr GudmannPeter Junker
Dec 12, 2017·The Journal of Dermatology·Toshiyuki Yamamoto, Akira Kawada
May 10, 2017·Annals of the Rheumatic Diseases·Alexander EgebergLotus Mallbris
Feb 12, 2009·The Journal of Rheumatology·Vinod Chandran
Feb 28, 2009·Scandinavian Journal of Rheumatology·J C Nossent, J T Gran
Dec 19, 2019·Pharmacoepidemiology and Drug Safety·Hemin LeeSeoyoung C Kim
Dec 1, 2017·Expert Opinion on Investigational Drugs·Peter Theut RiisGregor B Jemec
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May 22, 2021·Best Practice & Research. Clinical Rheumatology·Paras KarmacharyaAlexis Ogdie
Mar 30, 2021·Arthritis & Rheumatology·Paras KarmacharyaKerry Wright

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