Reliability and Validity of Turkish version of DSM-5 Substance Use Scale.

Objective: This study aims to evaluate the severity of substance use disorders according to the DSM-5 criteria and to show the reliability and validity of the Turkish version of the DSM-5 Substance Use Scale that improved to learn what kind of substances are used.

Methods: In this study,54 in or out-patients who met the criteria for any substance use disorder according to DSM-5 and who are receiving treatment in Psychiatry Department of Celal Bayar University Faculty of Medicine and AMATEM department of Bakırköy Prof. Dr. Mahzar Osman Mental Health and Neurology Training and Research Hospital, were included. One hundred volunteers without any mental or physical disease were also recruited as the control group. Beside the DSM-5 Level 2 substance use scale, Addiction Profile İndex was used for concurrent validity. Internal consistency coefficient and item-total correlation analysis were performed for reliability analysis. ROC Analysis was used in the validity analysis.

Results: Mean age was 26.97±10.20 years in the study group and 39% of the sample (n=60) were female. 5.6% (n=3) of the patient group were female and 94.4% (n=51) were male. In the control group, 57% (n=57) were female and 43% (n=43) were male. Of the patients diagnosed with substance use disorder (n=54), 88.7% had opiate use disorder, 5.6% had polysubstance use disorder, 5.6% had other (unknown) substance (synthetic cannabinoid) use disorder and 1.8% of patients have cannabis use disorder. The internal consistency of the substance use scale was 0.80 and itemtotal correlation coefficients were between 0,196- 0,643 (p<0.0001). Coefficient of correlation analysis with API was calculated as r=0.806 (p<0.0001).

Conclusion: The results showed that DSM-5 Substance Use Scale is a valid and reliable questionnaire that can be used to measure the progress of different dimensions of alcohol and substance use.