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. |
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| 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] |
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| Database: | Psychology and Behavioral Sciences Collection |
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| 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] |
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| ISSN: | 09652140 |
| DOI: | 10.1046/j.1360-0443.2002.00164.x |
