The Adaptation of the Substance Use Stigma Mechanism Scale (SU-SMS) Into Turkish: A Validity and Reliability Study

Substance users are among the most highly stigmatized individuals by both the public and health care providers. However, no multidimensional scale for measuring substance use stigma for substance use disorders (SUDs) currently exists in Turkey.

The aim of this study was to determine the validity and reliability of the Turkish version of the Substance Use Stigma Mechanism Scale (SU-SMS).

The study was conducted at the AMATEM (Alcohol and Substance Addiction Treatment Center Clinic). The sample group of this methodological study consisted of 156 participants with SUDs who met the inclusion criteria. "Social-demographics Questionnaire," "The Substance Use Stigma Mechanism Scale," and "Internalized Stigma of Mental Illness Scale" were used for data collection. In the validity-reliability analysis of the scale, language and content validity, explanatory and confirmatory factor analysis, criterion-concurrent validity, Cronbach's alpha coefficient, item-total score correlation, split-half reliability analysis, and test-retest reliability methods were used.

Using exploratory factor analysis, it was found that the SU-SMS has five factors. Its five-factor structure was confirmed using confirmatory factor analysis. Its Cronbach's alpha coefficient was .828, and factor loading was between .402 and .971. Analyses indicated that each of the factors of the Turkish version of the scale had high internal consistency. The test-retest correlation value was .752, p = .000.

It was concluded that the Turkish version of the SU-SMS is a reliable and valid instrument for assessing substance use-related stigma in individuals with SUDs.