Article Text

other Versions

PDF
Psoriatic arthritis in Denmark Occurrence by self-report and according to the CASPAR versus the Moll and Wright criteria.
  1. Ole Birger Vesterager Pedersen (obpedersen{at}health.sdu.dk)
  1. Odense University Hospital, Denmark
    1. Anders Jørgen Svendsen (asvendsen{at}health.sdu.dk)
    1. University of Southern Denmark, Denmark
      1. Leif Ejstrup (leif.ejstrup{at}ouh.regionsyddanmark.dk)
      1. Odense University Hospital, Denmark
        1. Axel Skytthe (askytthe{at}health.sdu.dk)
        1. University of Southern Denmark, Denmark
          1. Peter Junker (peter.junker{at}ouh.regionsyddanmark.dk)
          1. Odense University Hospital, Denmark

            Abstract

            Objective: 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.

            Methods: 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 (M&W) and CASPAR criteria based on interview, clinical examination, and scrutiny of medical records.

            Results: A total of 228 twin individuals reported PsA and 184 (81%) participated in clinical validation. By using the M&W 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 M&W 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 pyr (95% CI: 3/100,000 pyr, 11/100,000 pyr).

            Conclusion: The positive predictive value of self-reported PsA was 31%. The prevalence and incidence figures of PsA were equivalent to the previously reported occurrence in population- and hospital-based studies.

            • classification
            • epidemiology
            • incidence
            • prevalence
            • psoriatic arthritis

            Statistics from Altmetric.com

            Request permissions

            If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.