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A multi-site study of alcohol subtypes: classification and overlap of unidimensional and multi-dimensional typologies.

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Title: A multi-site study of alcohol subtypes: classification and overlap of unidimensional and multi-dimensional typologies.
Authors: Epstein, Elizabeth E. (AUTHOR), Labouvie, Erich (AUTHOR), McCrady, Barbara S. (AUTHOR), Jensen, Noelle K. (AUTHOR), Hayaki, Jumi (AUTHOR)
Source: Addiction. Aug2002, Vol. 97 Issue 8, p1041-1053. 13p. 7 Charts.
Subjects: Psychology of alcoholism, Psychological typologies, Antisocial personality disorders
Abstract: Aims The current study examined the usefulness of four prevailing alcohol typologies, assessed in terms of replicability of the multi-dimensional schemas, percentage of the sample classified by each typology, distribution of subtypes by gender and treatment site and construct validity of Type 1/Type 2. In addition, overlap of classification systems was examined to determine whether the four typologies may be narrowed to a smaller set of meaningful, non-redundant subtype schemas. Design Baseline data from five treatment outcome studies were used to facilitate subtyping according to four alcohol typologies: antisocial (ASP) versus non-ASP, early versus late onset, Type 1/Type 2 and Type A/Type B. Setting The studies were conducted at several in-patient and out-patient treatment sites. Participants The sample included 342 participants (23% female) who met DSM-III-R criteria for alcohol abuse or dependence. Measurements Subjects were assessed on substance use severity, family history, psychopathology, personality and psychosocial functioning. Findings Type 1/Type 2 and Type A/B typologies were replicated. Type 1/Type 2 had poor construct validity due to symptom cluster overlap between the two subgroups. Only 14% of the subjects met criteria for ASP. The two strongest associations including that between early versus late onset and Type 1/Type 2 and that between ASP versus non-ASP and Type A/Type B, were expected and reflect overlaps in conceptual definitions. In comparison, the relationship between early versus late onset and ASP versus non-ASP and Type A/B was weak. Conclusions Clinical utility of the ASP/non-ASP typology is limited in nonVeterans Administration (VA) samples, due to low prevalence. The Type 1/Type 2 subtyping schema was redundant with the age of onset schema, and was the least internally valid of all four typologies. In general, the Type A/B schema was most promising of prevailing typologies studied. It was relatively inclusive, and the A, B groups... [ABSTRACT FROM AUTHOR]
Copyright of Addiction is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Psychology and Behavioral Sciences Collection
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  Data: A multi-site study of alcohol subtypes: classification and overlap of unidimensional and multi-dimensional typologies.
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  Data: <searchLink fieldCode="AR" term="%22Epstein%2C+Elizabeth+E%2E%22">Epstein, Elizabeth E.</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Labouvie%2C+Erich%22">Labouvie, Erich</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22McCrady%2C+Barbara+S%2E%22">McCrady, Barbara S.</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Jensen%2C+Noelle+K%2E%22">Jensen, Noelle K.</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Hayaki%2C+Jumi%22">Hayaki, Jumi</searchLink> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Addiction%22">Addiction</searchLink>. Aug2002, Vol. 97 Issue 8, p1041-1053. 13p. 7 Charts.
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  Data: Aims The current study examined the usefulness of four prevailing alcohol typologies, assessed in terms of replicability of the multi-dimensional schemas, percentage of the sample classified by each typology, distribution of subtypes by gender and treatment site and construct validity of Type 1/Type 2. In addition, overlap of classification systems was examined to determine whether the four typologies may be narrowed to a smaller set of meaningful, non-redundant subtype schemas. Design Baseline data from five treatment outcome studies were used to facilitate subtyping according to four alcohol typologies: antisocial (ASP) versus non-ASP, early versus late onset, Type 1/Type 2 and Type A/Type B. Setting The studies were conducted at several in-patient and out-patient treatment sites. Participants The sample included 342 participants (23% female) who met DSM-III-R criteria for alcohol abuse or dependence. Measurements Subjects were assessed on substance use severity, family history, psychopathology, personality and psychosocial functioning. Findings Type 1/Type 2 and Type A/B typologies were replicated. Type 1/Type 2 had poor construct validity due to symptom cluster overlap between the two subgroups. Only 14% of the subjects met criteria for ASP. The two strongest associations including that between early versus late onset and Type 1/Type 2 and that between ASP versus non-ASP and Type A/Type B, were expected and reflect overlaps in conceptual definitions. In comparison, the relationship between early versus late onset and ASP versus non-ASP and Type A/B was weak. Conclusions Clinical utility of the ASP/non-ASP typology is limited in nonVeterans Administration (VA) samples, due to low prevalence. The Type 1/Type 2 subtyping schema was redundant with the age of onset schema, and was the least internally valid of all four typologies. In general, the Type A/B schema was most promising of prevailing typologies studied. It was relatively inclusive, and the A, B groups... [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Addiction is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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