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The Development of the Substance Use Disorder Screening Test (SUDST) according to the DSM-5
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  • Sukuma Saengduenchai,
  • Sumnao Nilaban,
  • Tanya Singtho,
  • Apichart Ranuwattananon,
  • Rasmon Kalayasiri
Sukuma Saengduenchai
Princess Mother National Institute on Drug Abuse Treatment
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Sumnao Nilaban
Princess Mother National Institute on Drug Abuse Treatment
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Tanya Singtho
Princess Mother National Institute on Drug Abuse Treatment
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Apichart Ranuwattananon
Princess Mother National Institute on Drug Abuse Treatment
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Rasmon Kalayasiri
Chulalongkorn University

Corresponding Author:[email protected]

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Abstract

Rationale, aims, and objectives: An effective screening tool for substance use disorders is most needed for patient care and referral. The study aims to develop the Substance Use Disorder Screening Test (SUDST) to classify the severity of substance use disorders based on the Fifth Edition of the Diagnostic and Statistical Manual of Mental Disorders (DSM-5). Methods: Eleven items of the SUDST, developed based on the DSM-5 criteria for substance use disorders, were tested on 207 participants who were receiving treatment for methamphetamine use at the Thanyarak hospitals in four regions of Thailand from August 2017–December 2018. Participants were interviewed with the SUDST, the screening test of the Ministry of Public Health Version 2 (V.2), the Mini International Neuropsychiatric Inventory (M.I.N.I) and were clinically diagnosed by attending psychiatrists. Internal consistency was analysed using Cronbach’s alpha. Content validity, concurrent validity, and construct validity were tested. Results: Cronbach’s alpha coefficient was 0.79. The SUDST was highly significantly associated with the M.I.N.I., V.2, and the clinical diagnosis (p < 0.001). Factor analysis showed three components of the instrument: 1) preoccupation and loss of control 2) risky/harmful use and 3) impact to bio-psychosocial aspects. Of the total score of 11, the cut-off point to identify severe risk was ≥7, moderate risk was 5-6, and mild level of risk was 3-4 with sensitivity = 72.7% to 96.5% and specificity = 61.9% to 88.7%. Conclusions: The Thai SUDST has been tested for content, concurrent, and construct validity and had high reliability that could be used for screening risk of substance use based on DSM-5 diagnosis for substance use disorders.