Study Evaluating The Prevalence Of Undiagnosed Psoriatic Arthritis In Patients With Plaque Psoriasis

Study Overview
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Brief Summary
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This study aims to collect Australian data on the prevalence of undiagnosed psoriatic arthritis in patients with plaque psoriasis. In addition the study will assess disease severity and quality of life in Australian patients with psoriasis attending specialist dermatology clinics.

Detailed Description
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Consecutive psoriasis patients seen at each site will be invited to participate in the study

Official Title
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An Australian Cross-Sectional Epidemiological Study To Evaluate The Prevalence Of Undiagnosed Psoriatic Arthritis In Psoriasis Patients In Dermatology Practice Focusing On Disease Severity, Disease Burden And Quality Of Life

Conditions
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Arthritis, Psoriatic, Psoriasis

Intervention / Treatment
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* Other: questionnaire


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Diagnosis of plaque psoriasis >= 18 years of age Able to complete English-language questionnaires Exclusion Criteria: Participation in an interventional clinical trial in previous 3 months Known rheumatologist-confirmed psoriatic arthritis

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Study population<br>The group comprises the entire study population | Other: questionnaire<br>* There is no therapeutic intervention in this study. However PASE (Psoriatic Arthritis Screening and Evaluation) and other patient questionnaires will be completed by participants.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| To evaluate the prevalence of undiagnosed psoriatic arthritis in patients presenting with plaque psoriasis using the PASE (Psoriatic Arthritis Screening and Evaluation) questionnaire based on a score of ≥ 44 on the questionnaire |  | 14 days | 
| Evaluate the positive predictive value between PASE (Psoriatic Arthritis Screening and Evaluation) score ≥ 44 and rheumatologist-confirmed diagnosis of psoriatic arthritis in a population of tertiary Australian psoriasis patients |  | 14 days | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Evaluate the proportion of patients within the enrolled patient population with moderate-to-severe plaque psoriasis (PASI [Psoriasis Area and Severity Index] > 10) |  | 1 day | 
| Evaluate the proportion of patients in a tertiary population with moderate-to-severe psoriasis with respect to treatment history and current treatment |  | 1 day | 
| Describe quality of life (QoL) in a tertiary psoriasis patient population |  | 1 day | 
| Explore the relationship between disease severity and QoL (quality of life) and stratified by the presence or absence of psoriatic arthritis in a tertiary population |  | 14 days | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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psoriasis, psoriatic arthritis, epidemiology, prevalence