Validity and Consistency of Self-Reports Regarding Substance Use in General Research Volunteers, Including Regular Cannabis Users and Schizophrenia Patients

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    Abstract

    This study investigated the validity of self-reports of substance use in 69 low-level substance users from the general community of Perth, Australia, volunteering for electrophysiological research, between 2002 and 2003. The participants included regular cannabis users and schizophrenia patients. Self-reports of recent use (last 24 hours) highly agreed with urine screen results (kappa = 0.91). Self-reports of past use (lifetime and last 12 months) had poor-moderate consistency based on correlations among dependence (measured with SDS, FTND, SMAST, CAGE), frequency, and use duration. Therefore, under some conditions, self-reports are valid for recent use and only moderately consistent for past substance use in general research participants.
    Original languageEnglish
    Pages (from-to)743-750
    JournalSubstance Use and Misuse
    Volume41
    Issue number5
    DOIs
    Publication statusPublished - 2006

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    Cannabis
    schizophrenia
    Self Report
    Volunteers
    Schizophrenia
    SDS
    Research
    community
    Urine

    Cite this

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    title = "Validity and Consistency of Self-Reports Regarding Substance Use in General Research Volunteers, Including Regular Cannabis Users and Schizophrenia Patients",
    abstract = "This study investigated the validity of self-reports of substance use in 69 low-level substance users from the general community of Perth, Australia, volunteering for electrophysiological research, between 2002 and 2003. The participants included regular cannabis users and schizophrenia patients. Self-reports of recent use (last 24 hours) highly agreed with urine screen results (kappa = 0.91). Self-reports of past use (lifetime and last 12 months) had poor-moderate consistency based on correlations among dependence (measured with SDS, FTND, SMAST, CAGE), frequency, and use duration. Therefore, under some conditions, self-reports are valid for recent use and only moderately consistent for past substance use in general research participants.",
    author = "K.K. Kedzior and Johanna Badcock and Mathew Martin-Iverson",
    year = "2006",
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    AB - This study investigated the validity of self-reports of substance use in 69 low-level substance users from the general community of Perth, Australia, volunteering for electrophysiological research, between 2002 and 2003. The participants included regular cannabis users and schizophrenia patients. Self-reports of recent use (last 24 hours) highly agreed with urine screen results (kappa = 0.91). Self-reports of past use (lifetime and last 12 months) had poor-moderate consistency based on correlations among dependence (measured with SDS, FTND, SMAST, CAGE), frequency, and use duration. Therefore, under some conditions, self-reports are valid for recent use and only moderately consistent for past substance use in general research participants.

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