A Study in Participants With Psoriatic Arthritis Attending Dermatology Clinics

Study Overview
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Brief Summary
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The purpose of this study is to conduct full psychometric testing of the Early Arthritis for Psoriatic Patients (EARP) questionnaire in Australian, Korean and Chinese populations

Detailed Description
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This is a multicentre, observational, descriptive estimate of the proportion of participants with psoriatic arthritis among psoriasis participants attending dermatology clinics selected for this study. In addition, this study will involve full psychometric assessment of the Early psoriatic screening questionnaire (EARP) questionnaire with the aim of identifying and appropriately referring participants to a rheumatologist for review if their EARP score is 3 or greater at Screening (i.e. >= 3 at Visit 1).

Official Title
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Psoriatic Arthritis In Skin Clinics (PARIS) Study. A Multicentre, Observational, Descriptive Cross-Cultural Validation Study and Estimate of the Proportion of Patients With Psoriatic Arthritis Among Psoriasis Patients Attending Dermatology Clinics Selected for This Study

Conditions
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Psoriatic Arthritis

Intervention / Treatment
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* Other: No Intervention


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Patient must be a man or woman aged 18 to 65 years of age, inclusive The patient must have an established diagnosis of psoriasis (based upon clinical evidence, and documented medical history [19]) The patient must be able to read and write in the target language (English, Mandarin or Korean; or other relevant target languages) Each patient must sign an informed consent form (ICF) indicating that he or she understands the purpose of and procedures required for the study and are willing to participate in the study Exclusion Criteria: An established diagnosis of psoriatic arthritis Ever have received systemic treatment with a disease modifying antirheumatic drug (DMARD) for arthritis or spondylitis (inflammatory back pain) Ever have received systemic treatment with a biologic therapy for psoriasis (including infliximab, golimumab, ustekinumab, adalimumab or etanercept) A history of employment in or are currently employed in the healthcare industry; or Participated in the translation and linguistic validation of the EARP questionnaire

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 65 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 |
| --- | --- |
| Cohort 1<br>Participants with psoriatic arthritis among psoriasis particiants attending dermatology clinics. | Other: No Intervention<br>* This is an obervational study<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Percentage of Participants With Psoriatic Arthritis | Percentage of participants with psoriatic arthritis will be assessed using formula: Number of participants diagnosed with psoriatic arthritis divided by total number of participants with psoriasis attending the dermatology clinic. | Baseline up to Day 28 | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Psoriatic arthritis