Evidence map›Paper›PMID 29283198›Full record

ArticleDepression and anxiety2018

A classical twin study of PTSD symptoms and resilience: Evidence for a single spectrum of vulnerability to traumatic stress.

Erika J Wolf, Mark W Miller, Danielle R Sullivan, Ananda B Amstadter, Karen S Mitchell, Jack Goldberg, Kathryn M Magruder

Abstract readTwin Study
In one paragraph

Article in Depression and anxiety, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 47 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
47citing papers in PubMed, 2 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

47 citing papers in PubMed, 2 syntheses or guidelines pooled it.

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  14. A statistical genetic investigation of psychiatric resilience.European journal of psychotraumatology · 2023
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors.

Erika J WolfNational Center for PTSD, VA Boston Healthcare System, Boston, MA, USA.ORCID 0000-0003-2666-2435
Mark W MillerNational Center for PTSD, VA Boston Healthcare System, Boston, MA, USA.
Danielle R SullivanNational Center for PTSD, VA Boston Healthcare System, Boston, MA, USA.
Ananda B AmstadterDepartment of Psychiatry and School of Medicine, Virginia Institute for Psychiatric and Behavioral Genetics, Virginia Commonwealth University, Richmond, VA, USA.
Karen S MitchellNational Center for PTSD, VA Boston Healthcare System, Boston, MA, USA.
Jack GoldbergSeattle Epidemiologic Research and Information Center, VA Puget Sound Health Care System, Seattle, WA, USA.
Kathryn M MagruderDepartment of Psychiatry and Behavioral Sciences, Medical University of South Carolina, Charleston, SC, USA.

Funding

Postdoctoral Training Program in Stress and TraumaT32MH019836 · NIMH · TUFTS UNIVERSITY BOSTON · PI DENISE M. SLOAN · 1996 to 2026
$4.7M
Stress-induced drinking in Returning Soldiers: Genetic and Epigenetic MechanismsK02AA023239 · NIAAA · VIRGINIA COMMONWEALTH UNIVERSITY · PI AMSTADTER, ANANDA B · 2014 to 2018
$643k
CSRD VA CDA-2-067-10SNIAAA NIH HHS K02 AA023239NIMH NIH HHS T32 MH019836
6 · The paper itself

Abstract

backgroundTo examine shared genetic and environmental risk factors across PTSD symptoms and resilience.

methodsClassical twin study of 2010-2012 survey data conducted among 3,318 male twin pairs in the Vietnam Era Twin Registry. Analyses included: (a) estimates of genetic and environmental influences on PTSD symptom severity (as measured by the PTSD Checklist) and resilience (assessed with the Connor-Davidson Resilience Scale-10); (b) development of a latent model of traumatic stress, spanning both PTSD and resilience; and (c) estimates of genetic and environmental influences on this spectrum.

resultsThe heritability of PTSD was 49% and of resilience was 25%. PTSD and resilience were correlated at r = -.59, and 59% of this correlation was attributable to a single genetic factor, whereas the remainder was due to a single non-shared environment factor. Resilience was also influenced by common and unique environmental factors not shared with PTSD, but there was no genetic factor specific to resilience. Confirmatory factor analysis supported the Development of a revised phenotype reflecting the broader dimension of traumatic stress, with biometric models suggesting increased heritability (66%) of this spectrum compared to PTSD or resilience individually.

conclusionsGenetic factors contribute to a single spectrum of traumatic stress reflecting resilience at one end and high symptom severity at the other. This carries implications for phenotype refinement in the search for molecular genetic markers of trauma-related psychopathology. Rather than focusing only on genetic risk for PTSD, molecular genetics research may benefit from evaluation of the broader spectrum of traumatic stress.

Indexed as

Diseases in TwinsDisease SusceptibilityRegistriesResilience, PsychologicalStress Disorders, Post-TraumaticAgedHumansMaleMiddle AgedVeteransgeneticPTSDresiliencetraumatic stresstwinsVietnam Era Twin Registry

Identifiers

PMID29283198
PMCPMC5794534

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.