To measures substance use we used the Alcohol Use Disorders Identification Test AUDITT) [ 23] and the Drug Use Disorders Identification Test DUDITT) [ 24].
When referral source was taken into account, quite a few initial differences in the baseline variables to be used as outcome measures (substance use, alcohol use disorder, co-morbid internalizing mental health symptoms) and in demographic characteristics (type of school attended) were no longer significant.
Current efforts to measure substance use stigma are limited.
Trained study staff conducted study interviews in English in a private setting using a structured protocol and validated instruments to measure substance use and substance use disorder severity, mental health, social support, partnerships, and HIV-related risk behaviors, as described further below.
This questionnaire is specifically developed to measure substance use among people with intellectual disabilities.
A sensitivity analysis was completed using the self-reported MAP assessment to measure substance use compared to urine drug screening.
Two self-report instruments measured substance use both at the follow-up and during the preceding year: the Alcohol Use Disorders Identification Test (AUDIT) and the Drug Use Disorders Identification Test DUDITT).
The second endogenous measure examined substance use, measured as use of cocaine, heroin, or amphetamines in the last 30 days prior to each interview including baseline pre-release interview.
Concurrent measures of substance use, mental health, social support, partnerships, and risk by the Level of Service Inventory-Revised (LSI-R) and clinical assessments were not significantly correlated.
In previous studies, the TLFB method demonstrated strong reliability and validity when compared to other measures of substance use (Fals-Stewart et al., 2000), including among homeless people (Sacks et al., 2003) and psychiatric outpatients (Carey, 1997).
Significantly better outcomes for MTC were found across four experimental versus control comparisons on 23.1% (12 of 52) of primary outcome measures of substance use, mental health, crime, HIV risk, employment, and housing.
