READ ME File For 'EMERALD Study Dataset: EMDR for Post-Traumatic Stress Symptoms Following Critical Illness' Dataset DOI: 10.5258/SOTON/D3865 ReadMe Author: Andrew Bates, University of Southampton, ORCID ID: 0000-0002-3614-0270 This dataset supports the thesis entitled "Eye movement desensitisation and reprocessing to improve mental health following intensive care admission" AWARDED BY: University of Southampton DATE OF AWARD: 2026 Date of data collection: [Feb 2023 - June 2025] Information about geographic location of data collection: Data were collected at multiple NHS hospital sites in England (Southampton, Poole and Bournemouth, UK intensive care units). Licence: Creative Commons Attribution (CC-BY) Related projects/Funders: NIHR302160 -------------------- DATA & FILE OVERVIEW -------------------- This dataset contains: Anonymised quantitative dataset including demographic variables, acute illness variables, and longitudinal mental health outcome measures. Clinician-administered PTSD diagnostic assessments (CAPS-5). Self-reported psychometric measures (IES-R, PHQ-9, GAD-7, EQ-5D-5L). All data collected at baseline. 3 and 12 months following hospital discharge. Relationship between files, if important for context: Participant study IDs link baseline, and outcome datasets. All identifiers have been pseudonymised and stripped of direct identifiers. Additional related data collected that was not included in the current data package: na If data was derived from another source, list source: Clinical baseline variables were extracted from electronic hospital records and entered into the study database in accordance with ethical approval. If there are there multiple versions of the dataset, list the file updated, when and why update was made:There are no multiple public versions of this dataset at the time of release. -------------------------- METHODOLOGICAL INFORMATION -------------------------- Description of methods used for collection/generation of data: Data were collected as part of a multicentre mixed-methods feasibility randomised controlled trial evaluating EMDR for post-traumatic stress symptoms in survivors of critical illness. Participants were screened at three months post-ICU discharge. Quantitative data included validated psychological instruments and clinician-administered diagnostic interviews (CAPS-5). Full study protocol details are available within the associated doctoral thesis (University of Southampton, 2026). Methods for processing the data: Data were extracted from Qualtrics databases and cleaned in Stata. Variable harmonisation was performed across study sites. Identifiers were removed and replaced with anonymised study IDs. Software- or Instrument-specific information needed to interpret the data, including software and hardware version numbers: Quantitative data processing: Stata SE 19.5 Standards and calibration information, if appropriate: Quality assurance procedures: Data cleaning included range checks, duplicate ID verification, cross-validation against case report forms, and independent verification of key outcome variables. CAPS-5 interviews were conducted by trained, assessor-masked clinicians. People involved: Andrew Bates (Chief Investigator and doctoral researcher) Supervisory team: [M. Grocott, R. Cusack, D. Baldwin, N. Pattison] Research nurses, trial therapists, and collaborating site investigators. -------------------------- DATA-SPECIFIC INFORMATION -------------------------- Number of variables: Number of cases/rows: Observational cohort: n=160 Randomised cohort: n=40 Variable list, defining any abbreviations, units of measure, codes or symbols used: study_id – anonymised participant identifier age – years at enrolment gender – categorical apache_ii – admission severity score caps5_total – Clinician Administered PTSD scale for DSM-5 total PTSD severity score iesr_total – Impact of Event Scale-Revised total score phq9_total – depression severity score gad7_total – anxiety severity score eq5d_index – health-related quality of life index Missing data codes: not coded Date that the file was created: February 2026