Improving treatment for patients with childhood abuse related posttraumatic stress disorder (IMPACT study): protocol for a multicenter randomized trial comparing prolonged exposure with intensified prolonged exposure and phase-based treatment
- PMID: 30541492
- PMCID: PMC6291949
- DOI: 10.1186/s12888-018-1967-5
Improving treatment for patients with childhood abuse related posttraumatic stress disorder (IMPACT study): protocol for a multicenter randomized trial comparing prolonged exposure with intensified prolonged exposure and phase-based treatment
Abstract
Background: Childhood abuse related posttraumatic stress disorder (CA-PTSD) is associated with a high burden of disease and with treatment response rates that leave room for improvement. One of the treatments for PTSD, prolonged exposure (PE), is effective but has high drop-out rates and remission rates are relatively low. An intensified form of PE (iPE) was associated with good response and low drop-out rates in PTSD and has not yet been tested in a controlled trial in CA-PTSD. Phase-based treatment (PBT), in which PE is preceded by skills training may improve overall outcomes in this population. We will assess the effectiveness and cost-effectiveness of standard PE, iPE and PBT in patients with CA-PTSD.
Methods/design: Multi-center randomized controlled trial. Treatment conditions are: prolonged exposure (PE; maximum of 16 sessions in 16 weeks); intensified PE (iPE; maximum of 12 sessions in four weeks and two booster sessions); phase-based treatment (PBT; maximum of eight sessions skills training followed by eight sessions PE in 16 weeks).
Primary outcome: Clinician-rated PTSD symptom severity.
Secondary outcomes: loss of PTSD diagnosis, self-reported PTSD symptom severity, comorbid symptom severity and quality of life. Moreover, we will examine cost-effectiveness and moderators and mediators of treatment outcome.
Target population: adults with CA-PTSD (N = 150). Assessments in weeks 0, 4, 8, 16, 26 and 52.
Discussion: Given that no consensus yet exists about the treatment guidelines for patients with CA-PTSD, the present study may have important implications for the treatment of CA-PTSD.
Trail registration: Registered at C.C.M.O. on Sept 7, 2016 (NL57984.058.16); retrospectively registered at June 21, 2017 at clinicaltrials.gov identifier: NCT03194113 .
Keywords: CA-PTSD; Childhood trauma; Intensive treatment; Phase-based treatment; Posttraumatic stress disorder; Prolonged exposure; STAIR; Trauma focused treatment.
Conflict of interest statement
Ethics approval and consent to participate
All participants will provide written informed consent prior to enrollment. The research protocol has been approved by the Medical Ethical Committee of Leiden University Medical Center (NL57984.058.16).
Consent for publication
Not applicable.
Competing interests
Agnes van Minnen: Receives fees from teaching and supervising clinical psychologists and psychiatrists in psychological trauma and its treatment by means of seminars, workshops and conferences, and royalties of books (Boom Publishers). Marylene Cloitre: Receives fees from teaching and consulting with mental health professionals in psychological trauma and its treatment by means of workshops, conferences and royalties from books. All other authors declare to have no competing interests.
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