Author/Authors :
pashaei، Tahereh نويسنده Department of Health education and Promotion ,School of Public Health ,Tehran University of Medical Sciences, Tehran , Iran , , Razaghi، Omran Mohammad نويسنده Department of Psychiatry, Tehran University of Medical Sciences, Tehran, Iran , , Rahimi Foroushani، Abbas نويسنده Department of Epidemiology and Biostatistics, School of Public Health, Tehran University of Medical Sciences, Tehran , , Ghazi Tabatabaei، Mahmoud نويسنده Department of Health and social Demography, Faculty of Social Sciences, University of Tehran. Tehran, Iran , , moeeni، Maryam نويسنده Department of Management and Health Economics, School of Public Health, Tehran University of Medical Sciences, Tehran. Iran , , E Turner، Nigel نويسنده Social Epidemiological Research & Problem Gambling Institute of Ontario Centre for Addiction and Mental Health, Toranto, Canada , , Sharifi، Vandad نويسنده , , Shojaeizadeh، Davoud نويسنده Department of Health education and Promotion ,School of Public Health ,Tehran University of Medical Sciences, Tehran , Iran ,
Abstract :
Objective: Inventory Drug-Taking Situations (IDTS) is a universal instrument used to determine high-risk situations resulting in drug abuse. The aim of this study was to translate this questionnaire to Farsi, and to assess its validity and reliability by applying it to Iranian drug users.
Methods: As a psychometric study, 300 drug users participated in a treatment program in National Center of Addiction Studies filled in a version of Inventory of Drug Taking Situations. We assessed face and content validity, internal consistency, and reliability based on the completed questionnaires, using test-retest method and confirmatory factor analysis.
Results: Internal consistency analysis confirmed that all subscales of IDTS were reliable (Cronbach alpha was ranging from 0.7 to 0.81). Analyses indicated that each of the subscales was unifactorial; however, unpleasant emotions had a second eigenvalue that was nearly large enough to be a second factor. Confirmatory factor analysis was used to test the fit of the data to the original version of IDTS. Based on goodness of fit indices, we found that all factors were fitted (?2/df=1.43, GFI=0.98, RMSEA=0.038). The test-retest reliability was satisfactory(r > 0.6).
Conclusion: The Farsi version of Inventory of Drug Taking Situations was shown to be a valid and reliable instrument to apply in clinical and research settings in Iran.
