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A Meta-analysis of Imagery Rehearsal for Post-trauma Nightmares: Effects on Nightmare Frequency, Sleep Quality, and Posttraumatic Stress

M. Casement, L. Swanson

Clinical Psychology Review June 30, 2012 DOI: 10.1016/j.cpr.2012.06.002 (opens in new tab)

Study at a glance

AI-extracted from the abstract
Characteristics Meta-analysis Peer reviewed
Population Individuals with post-trauma nightmares
Interventions Imagery rehearsal Cognitive behavioral therapy for insomnia
Duration 6 to 12 month follow-up
Topics Dreaming PTSD
Key findings Imagery rehearsal had large effects on nightmare frequency, sleep quality, and PTSD symptoms, sustained through 6 to 12 month follow-up.

Abstract

This meta-analysis evaluates the efficacy of imagery rehearsal as a treatment for nightmares, general sleep disturbance, and symptoms of post-traumatic stress. Bibliographic databases and cited references were searched to identify clinical trials of imagery rehearsal in individuals with post-trauma nightmares. Thirteen studies met inclusion criteria and reported sleep and post-traumatic stress outcomes in sufficient detail to calculate effect sizes. Results indicate that imagery rehearsal had large effects on nightmare frequency, sleep quality, and PTSD symptoms. These effects were sustained through 6 to 12 month follow-up. Furthermore, interventions that included both imagery rehearsal and cognitive behavioral therapy for insomnia resulted in greater treatment-related improvement in sleep quality than imagery rehearsal alone. Combined treatment did not improve outcomes for PTSD or nightmares. Notably, effect sizes were small in the single study that included an active-treatment control condition. Future research should identify necessary and sufficient components of interventions for trauma-related sleep disturbance and post-traumatic stress (e.g., exposure, cognitive reappraisal, circadian regulation).

Comparable studies

Other systematic reviews and meta-analyses on PTSD, most cited first.

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