ABSTRACT
Background: Understanding the motives and reasons for drug treatment is very important. This study aimed to develop a psychometric evaluation to determine the reasons for addiction treatment among outpatients referred to addiction treatment clinics
Methods: This cross-sectional validation study included five phases [i] Item generation [ii] Making an initial questionnaire [iii] Content validity [iv] Reliability analysis and [v] Structure validity. Addiction treatment motivations were identified by reviewing literatures and interviews with 21 stakeholders. A 30-item questionnaire was used for data collection and a random sample of 300 participants completed the questionnaire. The data were analyzed using content validity [CVR and CVI], internal consistency [Chronbach's alpha coefficient] and exploratory factor analysis [EFA] by SPSS version 16 software
Results: With exploratory factor analysis, 22 items that were remaining jointly explained 60.6% of the variance observed. Inconsistency assessment, Cronbach's coefficient [a] of items was 0.9. Items with CVIs and CVRs greater than 0.84, remained and factor loading cut off > 0.5 as valid items. They were loaded into four factor solution for the questionnaire, namely: family factors, threats, friend's factors and self-efficacy
Conclusions: This study suggests a reliable and valid instrument with four factors related to motives of addiction treatment