Replicability and generalizability of PTSD networks: A cross-cultural multisite study of PTSD symptoms in four trauma patient samples
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- Replicability and Generalizability of Posttraumatic Stress Disorder (PTSD) Networks
Final published version, 530 KB, PDF document
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) non-clinical samples, and (c) single samples. This renders network structures in clinical data, and the extent to which networks replicate across datasets, unknown. To overcome these limitations, the present cross-cultural multisite study estimated regularized partial correlation networks of 16 PTSD symptoms across four datasets 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 paper fully reproducible.
Original language | English |
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Journal | Clinical Psychological Science |
Volume | 6 |
Issue number | 3 |
Pages (from-to) | 335-351 |
Number of pages | 17 |
ISSN | 2167-7026 |
DOIs | |
Publication status | Published - 2018 |
- Faculty of Health and Medical Sciences - PTSD, Networks, Methodology, Symptoms, Cross-cultural, Multisite study
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