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Replicability and Generalizability of Posttraumatic Stress Disorder (PTSD) Networks: A Cross-Cultural Multisite Study of PTSD Symptoms in Four Trauma Patient Samples

Fried, Eiko I., Eidhof, Marloes B., Palic, Sabina, Costantini, Giulio, Huisman-van Dijk, Hilde M., Bockting, Claudi L. H., Engelhard, Iris, Armour, Cherie, Nielsen, Anni B. S. and Karstoft, Karen-Inge (2018) Replicability and Generalizability of Posttraumatic Stress Disorder (PTSD) Networks: A Cross-Cultural Multisite Study of PTSD Symptoms in Four Trauma Patient Samples. Clinical Psychological Science . pp. 1-17. [Journal article]

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URL: http://dx.doi.org/10.1177/2167702617745092

DOI: 10.1177/2167702617745092

Abstract

The growing literature conceptualizing mental disorders like posttraumatic stress disorder (PTSD) as networks of interacting symptoms faces three key challenges. Prior studies predominantly used (a) small samples with low power for precise estimation, (b) nonclinical samples, and (c) single samples. This renders network structures in clinical data, and the extent to which networks replicate across data sets, unknown. To overcome these limitations, the present cross-cultural multisite study estimated regularized partial correlation networks of 16 PTSD symptoms across four data sets of traumatized patients receiving treatment for PTSD (total N = 2,782). Despite differences in culture, trauma type, and severity of the samples, considerable similarities emerged, with moderate to high correlations between symptom profiles (0.43–0.82), network structures (0.62–0.74), and centrality estimates (0.63–0.75). We discuss the importance of future replicability efforts to improve clinical psychological science and provide code, model output, and correlation matrices to make the results of this article fully reproducible.

Item Type:Journal article
Keywords:posttraumatic stress disorder, replicability, network modeling, generalizability, open materials
Faculties and Schools:Faculty of Life and Health Sciences
Faculty of Life and Health Sciences > School of Psychology
Research Institutes and Groups:Psychology Research Institute > Psychotraumatology, Mental Health & Suicidal Behaviour
Psychology Research Institute
ID Code:39294
Deposited By: Prof Cherie Armour
Deposited On:22 Jan 2018 09:25
Last Modified:23 Jan 2018 12:11

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