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Meta-Analysis
. 2013 Nov;166(5):806-14.
doi: 10.1016/j.ahj.2013.07.031. Epub 2013 Sep 24.

Posttraumatic stress disorder and risk for coronary heart disease: a meta-analytic review

Affiliations
Meta-Analysis

Posttraumatic stress disorder and risk for coronary heart disease: a meta-analytic review

Donald Edmondson et al. Am Heart J. 2013 Nov.

Abstract

Objective: The aim of this study was to estimate the association of posttraumatic stress disorder (PTSD) with risk for incident coronary heart disease (CHD).

Design: A systematic review and meta-analysis were used as study designs.

Data sources: Articles were identified by searching Ovid MEDLINE, PsycINFO, Scopus, Cochrane Library, PILOTS database, and PubMed Related Articles and through a manual search of reference lists (1948-present).

Study selection: All studies that assessed PTSD in participants initially free of CHD and subsequently assessed CHD/cardiac-specific mortality were included.

Data extraction: Two investigators independently extracted estimates of the association of PTSD with CHD, as well as study characteristics. Odds ratios were converted to hazard ratios (HRs), and a random-effects model was used to pool results. A secondary analysis including only studies that reported estimates adjusted for depression was conducted.

Results: Six studies met our inclusion criteria (N = 402,274); 5 of these included depression as a covariate. The pooled HR for the magnitude of the relationship between PTSD and CHD was 1.55 (95% CI 1.34-1.79) before adjustment for depression. The pooled HR estimate for the 5 depression-adjusted estimates (N = 362,950) was 1.27 (95% CI 1.08-1.49).

Conclusion: Posttraumatic stress disorder is independently associated with increased risk for incident CHD, even after adjusting for depression and other covariates. It is common in both military veterans and civilian trauma survivors, and these results suggest that it may be a modifiable risk factor for CHD. Future research should identify the mechanisms of this association and determine whether PTSD treatment offsets CHD risk.

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Conflict of interest statement

Competing interests: All authors have completed the ICMJE uniform disclosure form at www.icmje.org/coi_disclosure.pdf and declare: all authors had financial support from NIH for the submitted work; no financial relationships with any organisations that might have an interest in the submitted work in the previous three years; no other relationships or activities that could appear to have influenced the submitted work.

Figures

Figure 1
Figure 1
Search strategy flowchart
Figure 2
Figure 2
Forest plot of the association of PTSD to incident CHD Note: The area of each square is proportional to the study’s weight in the meta-analysis, and each line represents the confidence interval around the estimate. The diamond represents the aggregate estimate, and its lateral points indicate confidence intervals for this estimate.
Figure 3
Figure 3
Funnel plot to assess publication bias across studies

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