Data for a Meta-analysis of Clinical PTSD Symptom Trajectories in Response to Evidence-based Trauma-focused Treatment

For the current paper, we conducted a further extension of the search through May 13, 2026 (see the corresponding search strategy document). Studies were additionally screened against a refined set of eligibility criteria, restricting inclusion to clinical, help-seeking samples that received clinician-administered, trauma-focused, evidence-based treatment. This resulted in a final included sample of 13 studies, comprising 14 distinct samples and 19,131 observations.

For the exact search, screening, and selection procedure, see the accompanying PRISMA flowchart. Contents The dataset contains the following files: data.csv – extracted data of general descriptives and background variables / moderators, model results and methodological details of all included samples for the meta-analysis of PTSD symptom trajectory prevalences PRISMA_Flowchart.pdf – flowchart detailing identification of studies via databases, screening, and final inclusions 2026_Update_Search_Strategy.pdf – document detailing the search strings used for the update of the FORAS dataset, tailored to the refined inclusion criteria GROLTS_scores.csv – final quality score of each included sample (for details on the improvement of the checklist, see the corresponding Github repository) Codebook_Data.pdf – description of all columns of the data.csv dataset Codebook_Trajectory_Labelling.pdf – visualisations and detailed descriptions of the standardised framework for identifying PTSD symptom trajectories