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Cognitive Behavioral Therapy / Sleep Wake Disorders / Depression · Journal article
European Journal of Psychotraumatology · June 15, 2026
Encouraging direction, but not yet definitive.
This secondary analysis of a randomized controlled trial found that baseline sleep disturbances—measured via subjective (PSQI), objective (actigraphy), and diary methods—did not significantly predict PTSD symptom reduction over up to 15 months of trauma-focused outpatient treatment in women with complex trauma. The null association held across both cognitive processing therapy and dialectical behaviour therapy for PTSD, and depression did not moderate the relationship, suggesting sleep deficits do not hinder longer-term trauma-focused treatment efficacy.
Secondary analysis of a multicenter, randomized controlled trial. Women with PTSD (including complex trauma presentations) enrolled in outpatient treatment. Intervention: Cognitive processing therapy (CPT) or dialectical behaviour therapy for PTSD (DBT-PTSD), delivered over up to 15 months. Compared with: Comparison between CPT and DBT-PTSD on the relationship between baseline sleep disturbances and treatment outcomes. n = 178. Germany (multiple centres; specific number and exact sites not stated in provided text).
Subjective sleep disturbances (PSQI) did not significantly predict overall PTSD treatment outcomes (p = 0.140) Depressive symptoms did not moderate the relationship between sleep and treatment response (p = 0.469) Effect did not differ between CPT and DBT-PTSD (p = 0.086)
Safety was not reported in the material analysed. Check the source before drawing any conclusion about harm.
These findings suggest that clinicians need not delay or withhold trauma-focused treatment (CPT or DBT-PTSD) pending sleep-specific interventions in women with PTSD and complex trauma; baseline sleep disturbance severity does not appear to hinder long-term treatment effectiveness.
Secondary analysis of an RCT with adequate sample size and mixed assessment methods (subjective and objective sleep measures) showing null findings for sleep disturbances as predictors of PTSD treatment response, with consistent results across both CPT and DBT-PTSD interventions.
As stated by the source record.
Quoted from the source exactly as published.
These findings suggest that clinicians need not delay or withhold trauma-focused treatment (CPT or DBT-PTSD) pending sleep-specific interventions in women with PTSD and complex trauma; baseline sleep disturbance severity does not appear to hinder long-term treatment effectiveness.
Graded across the dimensions that decide whether you should act, each from what the source actually supports. There is no single score, and where a dimension was not assessed it says so.
Background: Sleep disturbances are highly prevalent in individuals with post-traumatic stress disorder (PTSD) and might interfere with trauma-focused treatments by disrupting memory consolidation, extinction and safety learning. However, evidence on the impact of sleep deficits on PTSD treatments remains inconclusive.Objective: This study conducted a secondary analysis of a randomized controlled trial comparing cognitive processing therapy (CPT) and dialectical behaviour therapy for PTSD (DBT-PTSD) in women with PTSD. We examined whether subjective and objective baseline sleep disturbances predicted PTSD symptom reduction after up to 15 months of outpatient treatment, whether depression moderated this relationship, and whether effects differed for CPT and DBT-PTSD.Method: Sleep was assessed in n = 178 women using actigraphy, sleep diaries, and the Pittsburgh sleep quality index (PSQI), applying linear mixed models for each sleep measure.Results: Subjective sleep disturbances as measured in the PSQI did not significantly predict overall treatment outcomes for PTSD (p =.140). Additionally, depressive symptoms did not moderate this relationship (p =.469), and the effect did not differ for CPT and DBT-PTSD (p =.086). The same was found for sleep diary and actigraphy assessments.Conclusions: These findings suggest that sleep disturbances do not hinder the effectiveness of long-term trauma-focused PTSD treatment in women with complex trauma presentations, implying that sleep-specific interventions may not be a prerequisite for initiating trauma-focused treatment in this population.
Taken from the source record, never inferred. Follow any of these and new work involving them reaches your briefing.