Cultural Adaptation and Psychometric Properties of the Persian Version of the Evidence-Based Practice Attitudes Scale in Audiologists

Soheila Shayanmehr; Maryam Sadeghijam; Shohreh  Jalaie; Akram Pourbakht; Farnoush Jarollahi; Alimohamad  Asghari; Maryam Karimi Boroujeni

doi:10.18502/avr.v32i4.13596

Soheila Shayanmehr Department of Audiology, School of Rehabilitation Sciences, International Campus, Iran University of Medical Sciences, Tehran, Iran
Maryam Sadeghijam Rehabilitation Research Center, Iran University of Medical Sciences, Tehran, Iran
Shohreh Jalaie School of Rehabilitation, Tehran University of Medical Sciences, Tehran, Iran
Akram Pourbakht Rehabilitation Research Center, Iran University of Medical Sciences, Tehran, Iran
Farnoush Jarollahi Rehabilitation Research Center, Iran University of Medical Sciences, Tehran, Iran
Alimohamad Asghari Skull Base Research Center, The Five Senses Health Institute, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
Maryam Karimi Boroujeni Department of Audiology, School of Rehabilitation Sciences, Iran University of Medical Sciences, Tehran, Iran

DOI: https://doi.org/10.18502/avr.v32i4.13596

Abstract

Background and Aim: Evidence-based practice improves the quality of clinical performance. Attitude affects the implementation of research findings into practice. The Evidence-Based Practice Attitude Scale (EBPAS-36) evaluates the attitude of therapists toward evidence-based practice. The present study aimed to provide a validated Persian translation of the EBPAS-36 for audiologists.

Methods: The original EBPAS-36 was translated by using the international quality of life assessment protocol. The validity of translated version was surveyed by an expert panel and the Persian version with 35 questions was yielded. A demographic questionnaire and EBPAS P-35 were given to 182 audiologists to evaluate the psychometric properties. The reliability was evaluated by completing the EBPAS P-35 after 2 weeks by 30 of the participants and Cronbach’s alpha and Intra-Class Correlation (ICC) were calculated. Confirmatory Factor Analyses (CFA) were also conducted.

Results: The content validity ratio was above 0.33 for all except item 10 which was removed from the Persian version. The mean(SD) total score was 2.38(0.46). A significant relationship was observed between the total score and all subscales (p<0.05). The original factor structure showed an acceptable model fit (CMIN/DF=1.39, GFI=0.84, CFI=0.94, IFI=0.94, RMSEA=0.04) confirming the 12-factor structure of the EBPAS-36. The internal consistency was very good for the total score (α=0.88) and adequate to very good for the subscales (0.65–0.84), indicating high reliability. The ICC showed good agreement in the score of test-retest (total ICC=0.65).

Conclusion: This study confirms good psychometric properties and validity of the EBPAS P-35 in a sample of audiologists.

Keywords: Evidence-based practice; research-based intervention; clinical implementation; attitude; audiologist