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Latent profile analysis and principal axis factoring of the DSM-5 dissociative subtype.

Frewen PA, Brown MF, Steuwe C, Lanius RA - Eur J Psychotraumatol (2015)

Bottom Line: Moreover, the 20-item PTSD Checklist for DSM-5 (PCL-5) currently does not assess depersonalization and derealization.Those in the severe dissociative class were particularly likely to endorse histories of childhood physical and sexual abuse.A principal axis factor analysis of the symptom list identified six latent variables: 1) Reexperiencing, 2) Emotional Numbing/Anhedonia, 3) Dissociation, 4) Negative Alterations in Cognition & Mood, 5) Avoidance, and 6) Hyperarousal.

View Article: PubMed Central - PubMed

Affiliation: Department of Psychiatry, Western University, London, Ontario, Canada.

ABSTRACT

Objective: A dissociative subtype has been recognized based on the presence of experiences of depersonalization and derealization in relation to DSM-IV posttraumatic stress disorder (PTSD). However, the dissociative subtype has not been assessed in a community sample in relation to the revised DSM-5 PTSD criteria. Moreover, the 20-item PTSD Checklist for DSM-5 (PCL-5) currently does not assess depersonalization and derealization.

Method: We therefore evaluated two items for assessing depersonalization and derealization in 557 participants recruited online who endorsed PTSD symptoms of at least moderate severity on the PCL-5.

Results: A five-class solution identified two PTSD classes who endorsed dissociative experiences associated with either 1) severe or 2) moderate PTSD symptom severity (D-PTSD classes). Those in the severe dissociative class were particularly likely to endorse histories of childhood physical and sexual abuse. A principal axis factor analysis of the symptom list identified six latent variables: 1) Reexperiencing, 2) Emotional Numbing/Anhedonia, 3) Dissociation, 4) Negative Alterations in Cognition & Mood, 5) Avoidance, and 6) Hyperarousal.

Conclusions: The present results further support the presence of a dissociative subtype within the DSM-5 criteria for PTSD.

No MeSH data available.


Related in: MedlinePlus

PTSD and dissociation symptom severity across five latent classes. EN-M=Emotional Numbing—Moderate. HYP-M=Hyperarousal—Moderate. DISS-M=Dissociation—Moderate. DISS-S=Dissociation—Severe. ND-S=Non-Dissociative—Severe. LC=Latent Class. Statistically significant between class differences are reported in Table 4.
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Figure 0001: PTSD and dissociation symptom severity across five latent classes. EN-M=Emotional Numbing—Moderate. HYP-M=Hyperarousal—Moderate. DISS-M=Dissociation—Moderate. DISS-S=Dissociation—Severe. ND-S=Non-Dissociative—Severe. LC=Latent Class. Statistically significant between class differences are reported in Table 4.

Mentions: The resulting five classes were interpreted in reference to the measures with which they were extracted (Asparouhov & Muthen, 2013, e.g., Wolf, Miller, et al., 2012), and a multivariate ANOVA was significant as such, F(88, 2,136)=25.41, p<0.001, η2−partial=0.51. Follow-up univariate ANOVAs identified significant differences (p<0.001) between the five classes for all 20 of the core DSM-5 PTSD symptoms as well as for experiences of depersonalization and derealization. Table 4 presents the results of post-hoc tests. Please see Fig. 1 for an illustration of the five PTSD symptom profiles.


Latent profile analysis and principal axis factoring of the DSM-5 dissociative subtype.

Frewen PA, Brown MF, Steuwe C, Lanius RA - Eur J Psychotraumatol (2015)

PTSD and dissociation symptom severity across five latent classes. EN-M=Emotional Numbing—Moderate. HYP-M=Hyperarousal—Moderate. DISS-M=Dissociation—Moderate. DISS-S=Dissociation—Severe. ND-S=Non-Dissociative—Severe. LC=Latent Class. Statistically significant between class differences are reported in Table 4.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4390557&req=5

Figure 0001: PTSD and dissociation symptom severity across five latent classes. EN-M=Emotional Numbing—Moderate. HYP-M=Hyperarousal—Moderate. DISS-M=Dissociation—Moderate. DISS-S=Dissociation—Severe. ND-S=Non-Dissociative—Severe. LC=Latent Class. Statistically significant between class differences are reported in Table 4.
Mentions: The resulting five classes were interpreted in reference to the measures with which they were extracted (Asparouhov & Muthen, 2013, e.g., Wolf, Miller, et al., 2012), and a multivariate ANOVA was significant as such, F(88, 2,136)=25.41, p<0.001, η2−partial=0.51. Follow-up univariate ANOVAs identified significant differences (p<0.001) between the five classes for all 20 of the core DSM-5 PTSD symptoms as well as for experiences of depersonalization and derealization. Table 4 presents the results of post-hoc tests. Please see Fig. 1 for an illustration of the five PTSD symptom profiles.

Bottom Line: Moreover, the 20-item PTSD Checklist for DSM-5 (PCL-5) currently does not assess depersonalization and derealization.Those in the severe dissociative class were particularly likely to endorse histories of childhood physical and sexual abuse.A principal axis factor analysis of the symptom list identified six latent variables: 1) Reexperiencing, 2) Emotional Numbing/Anhedonia, 3) Dissociation, 4) Negative Alterations in Cognition & Mood, 5) Avoidance, and 6) Hyperarousal.

View Article: PubMed Central - PubMed

Affiliation: Department of Psychiatry, Western University, London, Ontario, Canada.

ABSTRACT

Objective: A dissociative subtype has been recognized based on the presence of experiences of depersonalization and derealization in relation to DSM-IV posttraumatic stress disorder (PTSD). However, the dissociative subtype has not been assessed in a community sample in relation to the revised DSM-5 PTSD criteria. Moreover, the 20-item PTSD Checklist for DSM-5 (PCL-5) currently does not assess depersonalization and derealization.

Method: We therefore evaluated two items for assessing depersonalization and derealization in 557 participants recruited online who endorsed PTSD symptoms of at least moderate severity on the PCL-5.

Results: A five-class solution identified two PTSD classes who endorsed dissociative experiences associated with either 1) severe or 2) moderate PTSD symptom severity (D-PTSD classes). Those in the severe dissociative class were particularly likely to endorse histories of childhood physical and sexual abuse. A principal axis factor analysis of the symptom list identified six latent variables: 1) Reexperiencing, 2) Emotional Numbing/Anhedonia, 3) Dissociation, 4) Negative Alterations in Cognition & Mood, 5) Avoidance, and 6) Hyperarousal.

Conclusions: The present results further support the presence of a dissociative subtype within the DSM-5 criteria for PTSD.

No MeSH data available.


Related in: MedlinePlus