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Abstract Number: 2744

Utilization of the Psoriasis Epidemiology Screening Tool (PEST) Questionnaire to Detect Psoriatic Arthritis in Clinical Practice: Data from the Validation of Psoriatic Arthritis Screening Tool for Korean Psoriasis Patients (VALOR) Study

You Jung Ha1, Soyun Cho2, Sang Heon Lee3, Yong Beom Choe4, Tae-Hwan Kim5, Joo Yeon Ko6, Sung Jae Choi7, Il-Hwan Kim8, Sang Woong Youn9 and Kichul Shin10, 1Division of Rheumatology, Department of Internal Medicine, Division of Rheumatology, Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, South Korea, 2Department of Dermatology, Department of Dermatology, SMG-SNU Boramae Medical Center, Seoul, Korea, The Republic of, 3Department of Internal Medicine,Division of Rheumatology., Division of Rheumatology, Department of Internal Medicine, Konkuk University School of Medicine, Seoul, Korea, The Republic of, 4Department of Dermatology, Konkuk University School of Medicine, Seoul, Korea, The Republic of, 5Department of Rheumatology, Department of Rheumatology, Hanyang University Hospital for Rheumatic Diseases, Seoul, South Korea, 6Department of Dermatology, Department of Dermatology, Hanyang University College of Medicine, Seoul, Korea, The Republic of, 7Division of Rheumatology, Department of Internal Medicine, Korea University Ansan Hospital, Ansan, Korea, The Republic of, 8Department of Dermatology, Korea University Ansan Hospital, Ansan, Korea, The Republic of, 9Department of Dermatology, Seoul National University Bundang Hospital, Seongnam, Korea, The Republic of, 10Division of Rheumatology, Department of Internal Medicine, SMG-SNU Boramae Medical Center, Seoul, Korea, The Republic of

Meeting: 2016 ACR/ARHP Annual Meeting

Date of first publication: September 28, 2016

Keywords: psoriasis, psoriatic arthritis and spondylarthropathy

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Session Information

Date: Tuesday, November 15, 2016

Session Title: Spondylarthropathies and Psoriatic Arthritis – Clinical Aspects and Treatment - Poster III

Session Type: ACR Poster Session C

Session Time: 9:00AM-11:00AM

Background/Purpose:  Several questionnaires have been developed to help identify psoriatic arthritis (PsA) among patients with psoriasis (PsO), but there is no screening tool yet tested through joint efforts by Dermatologists and Rheumatologists in Korea. The PsO Epidemiology Screening Test (PEST) is a simple self-administered questionnaire which has been validated in western countries. Our study aimed to investigate the utility and validation of PEST for screening PsA in Korean PsO patients.

Methods:  The PEST, consisted of 5 questions, was translated into Korean and then back-translated to English for comparison. This form was tested on PsO patients visiting the Dermatology clinic at 5 hospitals in urban areas. Patients who checked ‘yes’ to 2 or more questions were referred to Rheumatology for further evaluation. Patients meeting the classification criteria for psoriatic arthritis (CASPAR) criteria were confirmed to have PsA.

Results:  A total of 191 PsO patients from 5 centers were enrolled. The mean age was 45.1 years, and male/female ratio was 1.27. Of these, 150 patients checked ‘yes’ to 0 or 1 question of PEST questionnaire. Among the 41 patients with PEST ≥ 2, 35 patients were eventually assessed by a Rheumatologist. Of these subjects, 17 (48.6%) patients were finally diagnosed as PsA. Compared with PsO only patients, PsA patients had higher rate of female and lower rate of phototherapy history, although statistically insignificant. When comparing the characteristics between PsA and non-PsA among the patients assessed by rheumatologist, patients with PsA showed higher patient’s global assessment, physician’s global assessment, and Routine Assessments of Patient Index Data 3 (RAPID3) score than those without PsA. Six patients of the 17 PsA patients (35.3%) had radiographic evidence of sacroilitis. Among PsA patients, the proportion of patients with PEST score of 2 was 47% (8/17). The overall specificity of PEST at a cut-point of 2 was 89.3%. Using the known PEST cut-off score of 3, its specificity increased to 94.0%, but sensitivity dropped to 52.9%.

Conclusion:  This study supports that the Korean version of PEST is a convenient tool for screening PsA, and the PEST score of 2 points would be a favorable cut-off value for screening Korean PsO patients. However, its performance and utility in our region need to be further investigated.

  • References

1. Ibrahim GH, Buch MH, Lawson C, Waxman R, Helliwell PS. Evaluation of an existing screening tool for psoriatic arthritis in people with psoriasis and the development of a new instrument: the Psoriasis Epidemiology Screening Tool (PEST) questionnaire. Clin Exp Rheumatol. 2009;27:469-74


Disclosure: Y. J. Ha, None; S. Cho, None; S. H. Lee, None; Y. B. Choe, None; T. H. Kim, None; J. Y. Ko, None; S. J. Choi, None; I. H. Kim, None; S. W. Youn, None; K. Shin, None.

To cite this abstract in AMA style:

Ha YJ, Cho S, Lee SH, Choe YB, Kim TH, Ko JY, Choi SJ, Kim IH, Youn SW, Shin K. Utilization of the Psoriasis Epidemiology Screening Tool (PEST) Questionnaire to Detect Psoriatic Arthritis in Clinical Practice: Data from the Validation of Psoriatic Arthritis Screening Tool for Korean Psoriasis Patients (VALOR) Study [abstract]. Arthritis Rheumatol. 2016; 68 (suppl 10). https://acrabstracts.org/abstract/utilization-of-the-psoriasis-epidemiology-screening-tool-pest-questionnaire-to-detect-psoriatic-arthritis-in-clinical-practice-data-from-the-validation-of-psoriatic-arthritis-screening-tool-for-kor/. Accessed January 18, 2021.
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