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Table 1 Summary of key measures in the youth electronic assessment

From: The CAMP study: feasibility and clinical correlates of standardized assessments of substance use in a youth psychiatric inpatient sample

General construct Specific variables
Demographics Age, gender, sex, race/ethnicity, immigrant status, subjective social status [4, 48]
Substance use variables
 Cannabis use • Frequency of use [4, 58]
• Symptoms of cannabis use disorder (CUDIT-R) [59]
• Age of onset [4, 58]
• Percentage of typical THC/CBD, grams per use day, cost per week/month
• Coping motives scores [60]
• Proportion of time spent using with others [61]
• Co-use with alcohol and co-use with tobacco [4]
 Alcohol use • Frequency of any use [4, 58]
• Frequency of heavy episodic drinking (HED; 5+ drinks in a sitting) [4]
• Symptoms of alcohol use disorder (AUDIT) [62]
• Coping motives scores [63]
• Proportion of time spent using with others [61]
 Smoking • Frequency of smoking cigarettes/cigars [4, 58]
• Frequency of e-cigarette use and types of substances in e-cigarettes [4, 58]
 Prescription drug misuse Frequency of [4, 58, 64]:
 • Prescription stimulants
 • Prescription opioids
 • Prescription sedatives
 Other drug use Frequency of [4, 58, 64]:
 • Cocaine
 • Methamphetamine
 • Solvents
 • Hallucinogens
 • Street opioids
 • Steroids
Psychiatric clinical severity and complexity
 Severity of psychological distress The Kessler 6 (K6) [65] provided a dimensional measure of non-specific psychological distress. Previously derived cut-offs of ≥ 13 which indicate serious mental illness were used
 Internalizing symptom severity The OCHS Emotional Behavioral Scales (OCHS-EBS) [66] dimensional measure captured symptoms of internalizing disorders including:
 • Major depressive episode (MDE; of note, suicide item removed)
 • Generalized anxiety disorder (GAD)
 • Social phobia (SP)
 Externalizing symptom severity The OCHS-EBS [66] dimensional measure captured symptoms of externalizing disorders including:
 • Oppositional defiant disorder (ODD)
 • Conduct disorder (CD)
 • Attention deficit hyperactivity disorder (ADHD)
 Youth derived clinical complexity Clinical cut-offs for OCHS-EBS disorder scores based on prevalence estimates derived from a diagnostic structured interview in the original OCHS general population sample were used to generate categorical prevalence of disorders [34]. The number of cut-offs youth exceeded were summed to derive number of internalizing, externalizing, and total disorders as indicators of youth reported clinical complexity.
 Symptoms of psychosis A pre-existing symptom scale adapted from the Diagnostic Interview Schedule [67] provided a dimensional measure of symptoms of psychosis