Substance abuse problems, psychiatric severity, and HIV risk in Millon Clinical Multiaxial Inventory-II personality subgroups

Robert C. McMahon, Robert M. Malow, Frank J. Penedo

Research output: Contribution to journalArticle

15 Scopus citations


This study identified clinically meaningful psychopathology subgroups of drug-dependent male veterans based on cluster analysis of Millon Clinical Multiaxial Inventory-II (MCMI-II) records completed shortly after inpatient admission. A high pathology cluster subgroup was defined by clinically significant elevations on multiple personality disorder and symptom scales. An antisocial cluster subgroup was identified by a highly significant mean elevation on the Antisocial scale and secondary clinical elevations on the Aggressive and Narcissistic scales. Finally, a subclinical cluster subgroup was defined by the absence of clinically significant elevations on any MCMI- II scales. In comparison with members of the other two groups, members of the high pathology subgroup exhibited more substance abuse and psychiatric problems and less favorable attitudes relevant to HIV-AIDS risk reduction.

Original languageEnglish (US)
Pages (from-to)3-13
Number of pages11
JournalPsychology of Addictive Behaviors
Issue number1
StatePublished - Apr 22 1998


ASJC Scopus subject areas

  • Medicine (miscellaneous)
  • Clinical Psychology
  • Psychiatry and Mental health

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