Validity and Reliability of Methadone Maintenance Therapy Abstinence Orientation Scale in Iran: A Short Report

Methadone maintenance therapy is a comprehensive treatment plan in which methadone is used as a substitution long therapy in people with Opioid dependent. The aim of the present study is to translate and determine the validity and reliability of Abstinence Orientation Scale (AOS) in Iran. This cross-sectional study was carried out in Rafsanjan in 2013. The AOS was developed by Caplehorn et al. The back-translation method has applied in order to translate the original Scale from English into Farsi. Validity was checked using Impact Score (IS), Content Validity Ratio (CVR) and Content Validity Index (CVI). Reliability was checked using cronbach's Alpha coefficient. The IS for all questions was above 1.5. The CVR for all questions was above 0.62 and the CVI for all questions was above 0.79 and the whole were acceptable. The cronbach's Alpha coefficient was also equal 0.62 which was slightly less than the acceptable level (i.e. equal or more than 0.7). For the first time, in the present study the AOS was translated into Farsi and its validity and reliability were reported as to be rather satisfactory.