title: Cluster analysis of MCMI and MCMI-II on chronic PTSD victims.
abstract: A cluster analysis was used to identify groups of inpatients with confirmed post-traumatic stress disorder (PTSD) due to combat. In Study 1 the MCMI was administered to 256 subjects, in addition to the MMPI, PTSD measures, and background variables. Three clusters resulted: a Traumatic Personality (8-2), Schizoid Influence (8-2-1), and Antisocial Influence (8-6). Comparison on the MCMI symptom scales, MMPI, and PTSD scales showed that the Antisocial Influence cluster was "healthier" on all measures. The Schizoid Influence was most psychopathological. In Study 2 the MCMI-II was administered to 136 new subjects who met the same criteria as in Study 1. Four clusters resulted: Global (1-2-6A-6B-8A-8B), Subclinical (1), Aggressive (6A-6B-8A), and Detached/Self-defeating (1-2-8A-8B).
authors.affiliation: Veterans Administration, Augusta, Georgia.
authors.forename: L
authors.initials: L
authors.lastname: Hyer
authors.forename: H
authors.initials: H
authors.lastname: Davis
authors.forename: W
authors.initials: W
authors.lastname: Albrecht
authors.forename: P
authors.initials: P
authors.lastname: Boudewyns
authors.forename: G
authors.initials: G
authors.lastname: Woods
mesh_terms: D000328:Adult; D002908:Chronic Disease; D016000:Cluster Analysis; D003130:Combat Disorders / Q000145:classification / Q000175:diagnosis* / Q000523:psychology; D015897:Comorbidity; D006801:Humans; D008950:MMPI / Q000706:statistics & numerical data; D008297:Male; D008875:Middle Aged; D010343:Patient Admission; D010554:Personality Disorders / Q000145:classification / Q000175:diagnosis / Q000523:psychology; D010555:Personality Inventory / Q000706:statistics & numerical data*; D011594:Psychometrics; D014728:Veterans / Q000523:psychology*; D014744:Vietnam