AB0435 Cross-cultural adaptation and psychometric properties of the “eular sjögren’s syndrome patient report index” for portuguese language

Background The “EULAR Sjögren’s Syndrome Patient Report Index - ESSPRI” is a patient-administered questionnaire to assess patient symptoms. There is not any instrument to evaluate symptoms in Sjögren’s Syndrome (SSp) in Portuguese. Objectives To perform cultural adaptation and to study psychometric properties of the ESSPRI to Portuguese Language. Methods Cross-sectional observational study with patients with pSS according to the European-American Consensus 2002. In the adaptation process, there were six steps: conceptual equivalence, item, semantic, operational, measurement and functional. Semantic equivalence included translation, back translation, evaluation of semantics between the original and back translations, discussion with experts for final adjustments and pre-test of consensual version in twenty patients. In measurement equivalence, the psychometric properties of intra-observer reproducibility (interval of 02 days) and construct validity were assessed in 62 subjects. The ESSPRI was compared to Patient’s Global Assessment (PaGA), Profile of Fatigue and Discomfort (PROFAD), Sicca Symptoms Inventory (SSI) and Functional Assessment of Chronic Illness Therapy (FACIT-fatigue) to construct validity. Statistical tests used wereCronbach’s alpha for internal consistency; intraclass correlation coefficient (ICC) and Bland-Altman plot for intraobserver reproducibility; Spearman correlation. It was considered significant p