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Cross-Cultural Adaptation, Validity, and Reliability of the Persian Communicative Effectiveness Index for Post-Stroke Aphasia: A Preliminary Study Publisher



Khatoonabadi AR1 ; Murray LL2 ; Modarres Zadeh A1 ; Mehri A1 ; Maroufizadeh S3 ; Akbarimanie R1
Authors
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Authors Affiliations
  1. 1. Department of Speech, Therapy School of Rehabilitation, Tehran University of Medical Sciences, Tehran, Iran
  2. 2. School of Communication Sciences & Disorders, Western University, London, ON, Canada
  3. 3. School of Nursing and Midwifery, Guilan University of Medical Sciences, Rasht, Iran

Source: Aphasiology Published:2024


Abstract

Background: The Communicative Effectiveness Index (CETI) is a brief assessment scale designed to measure changes in the functional communication ability of people with post-stroke aphasia. Aims: This study aimed to translate the CETI to the Persian language and measure its cross-cultural adaptation, validity, and reliability in persons with aphasia (PWA). Methods and Procedures: The CETI was translated and adapted to Persian according to Beaton and colleagues’ (2000) guidelines. A cross-sectional study was then conducted to examine the psychometric properties of the Persian CETI (P-CETI), which was completed by 35 caregivers of PWA. Internal consistency and test-retest reliability of the P-CETI were evaluated using Cronbach’s alpha and the intra-class correlation coefficient (ICC), respectively. Concurrent validity was examined by correlating the P-CETI with the Functional Communication Performance Questionnaire in Adults with Brain Injury (P-FUCT). Outcomes and Results: There were no culturally challenging items in the original CETI version identified during the adaptation process, with Persian-speaking participants finding the P-CETI understandable. The mean total P-CETI score was 51.8 ± 25.4 (range: 15.0–92.5). Cronbach’s alpha coefficient was 0.97, and all corrected item-total and inter-item correlations were in the acceptable range. The P-CETI also showed excellent test-retest reliability, with ICC = 0.99. The P-CETI significantly correlated with the P-FUCT, indicating acceptable concurrent validity. Conclusions: The P-CETI can be considered a valid and reliable tool for the assessment of functional communication in Persian-speaking people with aphasia in clinical and research settings. © 2024 Informa UK Limited, trading as Taylor & Francis Group.
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