Volume 14, Issue 4 (July & August 2023)                   BCN 2023, 14(4): 471-478 | Back to browse issues page

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Golnezhad A, Torkaman-Boutorabi A, Razaghi E M, Zarrindast M R, Yadollahi S, Dousti Kataj P et al . Psychometric Characteristics of the Persian Version of the Opiate Dosage Adequacy Scale (ODAS). BCN 2023; 14 (4) :471-478
URL: http://bcn.iums.ac.ir/article-1-2528-en.html
1- Department of Neuroscience and Addiction Studies, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran.
2- Department of Psychiatry, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran.
3- Organization for Educational Research and Planning (OERP), Institute for Educational Studies and Research, Tehran, Iran.
Introduction: The opiate dosage adequacy scale (ODAS) is one of the most common assessment tools in studies on substance use disorders, which evaluates the “adequacy” of opiate medication doses in individuals recruited in maintenance approaches. There is no investigation on the Persian version of this questionnaire in Iran. This research validated a Persian version of the ODAS. 
Methods: The Persian version of the ODAS was translated and revised based on the original scale presented by González-Saiz et al. The psychometric characteristics of the ODAS were assessed via direct interviews. Three trained interviewers questioned 250 patients treated in methadone maintenance clinics in Mazandaran Province (Northern Iran) for more than three months. Internal consistency and factor analysis were conducted using SPSS software, version 24.
Results: The internal consistency of ODAS was satisfactory (Cronbach’s α=0.81). Across all items, considerable inter-rater reliability was discovered (kappa values between 0.90 and 1). A four-component structure was produced by the factor analysis that accounted for 77.5% of the total variance. Cronbach’s α coefficients of the four components of Heroin craving and overmedication, Consumption, objective opiate withdrawal symptoms, and subjective opiate withdrawal symptoms were 0.84, 0.91, 0.83, and 0.74, respectively.
Conclusion: The reliability and validity of the Persian version of the ODAS were satisfactory in a sample of methadone maintenance subjects.
Type of Study: Original | Subject: Clinical Neuroscience
Received: 2022/08/13 | Accepted: 2023/06/7 | Published: 2023/07/1

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