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Prevalence of psoriatic arthritis in patients with psoriasis: A systematic review and meta-analysis of observational and clinical studies

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Background: Wide-ranging prevalence estimates of psoriatic arthritis (PsA) in patients with psoriasis have been reported. Objectives: To assess the prevalence and incidence of PsA in patients with psoriasis. Methods: Two authors independently searched 3 databases for studies reporting on the prevalence or incidence of PsA in patients with psoriasis. A proportion meta-analysis was performed to calculate the pooled proportion estimates of PsA in patients with psoriasis. Results: A total of 266 studies examining 976,408 patients with psoriasis were included. Overall, the pooled proportion (95% confidence interval [CI]) of PsA among patients with psoriasis was 19.7% (95% CI, 18.5%-20.9%). In children and adolescents (<18 years of age), the pooled prevalence was 3.3% (95% CI, 2.1%-4.9%). The PsA prevalence was 22.7% (95% CI, 20.6%-25.0%) in European patients with psoriasis, 21.5% (95% CI, 15.4%-28.2%) in South American patients with psoriasis, 19.5% (95% CI, 17.1%-22.1%) in North American patients with psoriasis, 15.5% (95% CI, 0.009%-51.5%) in African patients with psoriasis, and 14.0% (95% CI, 95% CI, 11.7%-16.3%) in Asian patients with psoriasis. The prevalence of PsA was 23.8% (95% CI, 20.1%-27.6%) in studies in which the Classification Criteria for Psoriatic Arthritis were applied. The incidence of PsA among patients with psoriasis ranged from 0.27 to 2.7 per 100 person-years. Limitations: Between-study heterogeneity may have affected the estimates. Conclusions: We found that 1 in 4 patients with psoriasis have PsA. With the growing recognition of the Classification Criteria for Psoriatic Arthritis, more homogenous and comparable prevalence estimates are expected to be reported.

Original languageEnglish
JournalJournal of the American Academy of Dermatology
Volume80
Issue number1
Pages (from-to)251-265.e19
ISSN0190-9622
DOIs
Publication statusPublished - 1 Jan 2019

    Research areas

  • arthritis, arthropathy, incidence, prevalence, psoriasis, psoriatic, Arthritis, Psoriatic/epidemiology, Clinical Studies as Topic, Prevalence, Humans, Observational Studies as Topic, Psoriasis/complications

ID: 56143923