Abstract
Background
The treatment of posttraumatic stress disorder (PTSD) related to a history of sexual and/or physical abuse in childhood is the subject of international debate, with some favouring a phase-based approach as their preferred treatment, while others argue for immediate trauma-focused treatment. A history of (chronic) traumatisation during childhood has been linked to the development of distinct symptoms that are often labelled as symptoms of complex PTSD. Many therapists associate the presence of symptoms of complex PTSD with a less favourable treatment prognosis. The purpose of this study is to determine whether a phase-based approach is more effective than stand-alone trauma-focused therapy in individuals with PTSD and possible symptoms of complex PTSD resulting from a history of repeated sexual and/or physical abuse in childhood. An additional aim is to investigate moderators, predictors of treatment (non) response and drop-out.
Method
The sample consists of patients between 18 and 65 years old with a diagnosis of PTSD who report a history of repeated sexual and/or physical abuse in childhood (N = 122). Patients will be blindly allocated to either 16 sessions of eye movement desensitization and reprocessing (EMDR) therapy preceded by a stabilization phase (eight sessions of Skills Training in Affect and Interpersonal Regulation (STAIR)) or only 16 sessions of EMDR therapy. Assessments are carried out pre-treatment, after every eighth session, post-treatment, and at 3 and 6 months follow up. The main parameter will be the severity of PTSD symptoms (PTSD Symptoms Scale-Self Report). Secondary outcome variables are the presence of a PTSD diagnosis (Clinician-Administered PTSD Scale for DSM-5), severity of complex PTSD symptoms (Structured Interview for Disorders of Extreme Stress-Revised and symptoms-specific questionnaires), changes in symptoms of general psychopathology (Brief Symptom Inventory), and quality of life (Euroqol-5D). Health care consumption and productivity loss in patients will also be indexed.
Discussion
The study results may help to inform the ongoing debate about whether a phase-based approach has added value over immediate trauma-focused therapy in patients suffering from PTSD due to childhood abuse. Furthermore, the results will contribute to knowledge about the safety, efficacy, and cost-effectiveness of treatments in this target group.
Trial registration
Nederlands Trialregister, NTR5991. Registered on 23 august 2016. http://www.trialregister.nl/trialreg/admin/rctview.asp?TC=5991
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Details
1 Dimence Mental Health Group, Department for Anxiety and Mood Disorders, Deventer, the Netherlands
2 University of Groningen, Department of Experimental Psychotherapy and Psychopathology, Groningen, the Netherlands (GRID:grid.4830.f) (ISNI:0000 0004 0407 1981)
3 Dimence Mental Health Group, Department for Anxiety and Mood Disorders, Deventer, the Netherlands (GRID:grid.4830.f)
4 University of Amsterdam and Vrije Universiteit, Department of Social Dentistry and Behavioral Sciences, Amsterdam, the Netherlands (GRID:grid.7177.6) (ISNI:0000000084992262); School of Health Sciences, Salford University, Manchester, UK (GRID:grid.8752.8) (ISNI:0000 0004 0460 5971); University of Worcester, Institute of Health and Society, Worcester, UK (GRID:grid.189530.6) (ISNI:0000 0001 0679 8269)