<p>This is the first study aimed at providing validity evidence for the Brief Symptom Inventory-18 (BSI-18) in youth reporting past-month substance use. Participants were 4,360 young adults (<i>M</i>age [<i>SD</i>] = 19.62 [2.66]; 58.5% women) who had used alcohol, tobacco or cannabis in the previous 30&#xa0;days. Evidence of validity was gathered in relation to substance use severity, emotional dysregulation and suicidal behavior. The BSI-18 revealed a unidimensional factor solution (i.e., general Global Severity Index [GSI] factor) that remained consistent across sex, type of substance used, and substance use severity. Validity evidence was found in relation to substance use severity, positive emotion dysregulation, and suicidal behavior. The BSI-18 is reliable and valid for identifying emotional disorder risk in youth who use substances. Given its brevity, the BSI-18 is well-suited for epidemiological and early intervention, especially in time-consuming settings, such as primary care or schools.</p>

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New Validity Evidence, Psychometric Properties and Normative Data for the Brief Symptom Inventory-18 (BSI-18) among Young Populations who Report Substance Use

  • Clara Iza-Fernández,
  • Alba González-Roz,
  • Jaime García-Fernández,
  • Ignacio Cuesta-López,
  • Álvaro Postigo

摘要

This is the first study aimed at providing validity evidence for the Brief Symptom Inventory-18 (BSI-18) in youth reporting past-month substance use. Participants were 4,360 young adults (Mage [SD] = 19.62 [2.66]; 58.5% women) who had used alcohol, tobacco or cannabis in the previous 30 days. Evidence of validity was gathered in relation to substance use severity, emotional dysregulation and suicidal behavior. The BSI-18 revealed a unidimensional factor solution (i.e., general Global Severity Index [GSI] factor) that remained consistent across sex, type of substance used, and substance use severity. Validity evidence was found in relation to substance use severity, positive emotion dysregulation, and suicidal behavior. The BSI-18 is reliable and valid for identifying emotional disorder risk in youth who use substances. Given its brevity, the BSI-18 is well-suited for epidemiological and early intervention, especially in time-consuming settings, such as primary care or schools.