title: Japanese version of the early psoriatic arthritis screening questionnaire (EARP).
abstract: The early psoriatic arthritis screening questionnaire (EARP) is a simple and fast method for the identification of arthritis in patients with psoriasis. We established the Japanese version of the EARP (J-EARP) questionnaire, which includes 10 items with two choices for each. This study aimed to evaluate the utility of the J-EARP questionnaire. A total of 90 psoriasis patients, 19 psoriatic arthritis (PsA) patients and 71 psoriasis patients without joint involvement, were administered the J-EARP questionnaire. The diagnostic accuracy of the J-EARP questionnaire for the diagnosis of PsA and early-stage PsA was compared by receiver-operator curve (ROC) analysis. The J-EARP questionnaire showed similar ROC characteristics to those of the original version of the EARP (specificity 97.2% and 91.6% and sensitivity 97.2% and 85.2%, respectively) in PsA patients using the cut-off value of 3 for the J-EARP questionnaire, which was the same as that used for the original EARP questionnaire. The scores of the J-EARP questionnaire in early-stage PsA patients (<1 year from onset) were significantly higher than in those of psoriasis patients, but not lower than in those of later stage (≥1 year from onset) PsA patients. The J-EARP questionnaire is simple and fast to administer and has been proven to be robust for the identification of PsA. The J-EARP questionnaire is a useful diagnostic tool for early-stage PsA patients.
authors.affiliation: Department of Dermatology, Kitasato University School of Medicine, Kanagawa, Japan.
authors.forename: Hideki
authors.initials: H
authors.lastname: Maejima
authors.affiliation: Department of Dermatology, Kitasato University School of Medicine, Kanagawa, Japan.
authors.forename: Chieko
authors.initials: C
authors.lastname: Katayama
authors.affiliation: Department of Dermatology, Kitasato University School of Medicine, Kanagawa, Japan.
authors.forename: Tomonori
authors.initials: T
authors.lastname: Taniguchi
authors.affiliation: Department of Dermatology, Kitasato University School of Medicine, Kanagawa, Japan.
authors.forename: Ryouichi
authors.initials: R
authors.lastname: Aki
authors.affiliation: Department of Dermatology, Kitasato University School of Medicine, Kanagawa, Japan.|Department of Dermatology, Sagamino Hospital, Kanagawa, Japan.
authors.forename: Hiromi
authors.initials: H
authors.lastname: Nishiyama
authors.affiliation: Department of Applied Tumor Pathology, Kitasato University Graduate School of Medical Sciences, Kanagawa, Japan.|Department of Molecular Diagnostics, School of Allied Health Sciences, Kitasato University, Kanagawa, Japan.
authors.forename: Kenogo
authors.initials: K
authors.lastname: Yanagita
authors.affiliation: Department of Applied Tumor Pathology, Kitasato University Graduate School of Medical Sciences, Kanagawa, Japan.|Department of Molecular Diagnostics, School of Allied Health Sciences, Kitasato University, Kanagawa, Japan.
authors.forename: Yuichi
authors.initials: Y
authors.lastname: Sato
authors.affiliation: Rheumatology Department, S Cuore Hospital, Negrar Verona, Italy.
authors.forename: Ilaria
authors.initials: I
authors.lastname: Tinazzi
authors.affiliation: Department of Dermatology, Kitasato University School of Medicine, Kanagawa, Japan.
authors.forename: Akira
authors.initials: A
authors.lastname: Watarai
authors.affiliation: Department of Dermatology, Kitasato University School of Medicine, Kanagawa, Japan.
authors.forename: Yasuyuki
authors.initials: Y
authors.lastname: Amoh
mesh_terms: D000328:Adult; D000368:Aged; D015535:Arthritis, Psoriatic / Q000175:diagnosis*; D005260:Female; D006801:Humans; D007564:Japan; D008297:Male; D008403:Mass Screening / Q000379:methods*; D008875:Middle Aged; D011795:Surveys and Questionnaires
keywords: psoriatic arthritis; questionnaire; screening