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Relations between PTSD and depression symptom clusters in samples differentiated by PTSD diagnostic status.
J Anxiety Disord 2018; 59:17-26JA

Abstract

Co-occurring posttraumatic stress disorder (PTSD) and depression following traumatic experiences are cumulatively associated with functional impairment. To examine mechanisms for the PTSD-depression comorbidity, we investigated their cluster-level associations. Using data obtained from Amazon's Mechanical Turk platform, 368 trauma-exposed participants were split into two subsamples: those with (n = 163) and without (n = 185) probable PTSD. In both subsamples, confirmatory factor analyses indicated an optimal seven-factor PTSD Hybrid Model. Results of Wald tests of parameter constraints indicated that, in both subsamples, PTSD's dysphoric arousal cluster strongly related to somatic depression compared to all/most other PTSD Hybrid Model clusters. Additionally, in both subsamples, PTSD's negative affect, externalizing behaviors, and anhedonia clusters each strongly related to non-somatic depression compared to PTSD's anxious arousal cluster. Our results indicated that PTSD's dysphoric arousal symptoms mainly accounted for PTSD's shared variance with somatic depression, while the negative alterations in cognitions and mood (NACM)/dysphoria and arousal symptoms (primarily externalizing behaviours) mainly accounted for PTSD's shared variance with non-somatic depression. Our findings have implications for the discussion on PTSD's specific/non-specific clusters tied to diagnostic modifications, for understanding mechanisms underlying PTSD-depression comorbidity, and for the use of transdiagnostic and multi-component treatment protocols for PTSD-depression symptoms.

Authors+Show Affiliations

Department of Psychology, University of North Texas, Denton, TX, USA. Electronic address: ateka.contractor@unt.edu.Department of Community Mental Health, University of Haifa, Israel.Department of Psychology, University of North Texas, Denton, TX, USA.Department of Psychology and Department of Psychiatry, University of Toledo, Toledo, OH, USA.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

30142474

Citation

Contractor, Ateka A., et al. "Relations Between PTSD and Depression Symptom Clusters in Samples Differentiated By PTSD Diagnostic Status." Journal of Anxiety Disorders, vol. 59, 2018, pp. 17-26.
Contractor AA, Greene T, Dolan M, et al. Relations between PTSD and depression symptom clusters in samples differentiated by PTSD diagnostic status. J Anxiety Disord. 2018;59:17-26.
Contractor, A. A., Greene, T., Dolan, M., & Elhai, J. D. (2018). Relations between PTSD and depression symptom clusters in samples differentiated by PTSD diagnostic status. Journal of Anxiety Disorders, 59, pp. 17-26. doi:10.1016/j.janxdis.2018.08.004.
Contractor AA, et al. Relations Between PTSD and Depression Symptom Clusters in Samples Differentiated By PTSD Diagnostic Status. J Anxiety Disord. 2018;59:17-26. PubMed PMID: 30142474.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Relations between PTSD and depression symptom clusters in samples differentiated by PTSD diagnostic status. AU - Contractor,Ateka A, AU - Greene,Talya, AU - Dolan,Megan, AU - Elhai,Jon D, Y1 - 2018/08/16/ PY - 2018/02/25/received PY - 2018/08/04/revised PY - 2018/08/13/accepted PY - 2018/8/25/pubmed PY - 2019/7/30/medline PY - 2018/8/25/entrez KW - Confirmatory factor analyses KW - DSM-5 KW - Depression KW - PTSD KW - Wald tests of parameter constraints SP - 17 EP - 26 JF - Journal of anxiety disorders JO - J Anxiety Disord VL - 59 N2 - Co-occurring posttraumatic stress disorder (PTSD) and depression following traumatic experiences are cumulatively associated with functional impairment. To examine mechanisms for the PTSD-depression comorbidity, we investigated their cluster-level associations. Using data obtained from Amazon's Mechanical Turk platform, 368 trauma-exposed participants were split into two subsamples: those with (n = 163) and without (n = 185) probable PTSD. In both subsamples, confirmatory factor analyses indicated an optimal seven-factor PTSD Hybrid Model. Results of Wald tests of parameter constraints indicated that, in both subsamples, PTSD's dysphoric arousal cluster strongly related to somatic depression compared to all/most other PTSD Hybrid Model clusters. Additionally, in both subsamples, PTSD's negative affect, externalizing behaviors, and anhedonia clusters each strongly related to non-somatic depression compared to PTSD's anxious arousal cluster. Our results indicated that PTSD's dysphoric arousal symptoms mainly accounted for PTSD's shared variance with somatic depression, while the negative alterations in cognitions and mood (NACM)/dysphoria and arousal symptoms (primarily externalizing behaviours) mainly accounted for PTSD's shared variance with non-somatic depression. Our findings have implications for the discussion on PTSD's specific/non-specific clusters tied to diagnostic modifications, for understanding mechanisms underlying PTSD-depression comorbidity, and for the use of transdiagnostic and multi-component treatment protocols for PTSD-depression symptoms. SN - 1873-7897 UR - https://www.unboundmedicine.com/medline/citation/30142474/Relations_between_PTSD_and_depression_symptom_clusters_in_samples_differentiated_by_PTSD_diagnostic_status_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0887-6185(18)30083-5 DB - PRIME DP - Unbound Medicine ER -