The impact of childhood maltreatment on treatment outcomes for posttraumatic stress symptoms and aggression in male former combatants using narrative exposure therapy [NET] - results from a RCT in Eastern democratic Republic of Congo.

Objective: This study investigates the impact of childhood maltreatment on treatment outcomes among male ex-combatants in a randomized controlled trial (RCT) of Narrative Exposure Therapy for Forensic Offender Rehabilitation (FORNET), a specialized psychotherapy used to treat trauma sequelae including symptoms of posttraumatic stress disorder (PTSD), compared with treatment as usual (TAU). Specifically, we aim to compare former child and adult male soldiers who experienced childhood sexual abuse (CSA) with those who did not.

Methods: We conducted a sub-analysis of data from Koebach et al. [J Consult Clin Psychol. 2021], focusing on a sample of male former soldiers in the eastern Democratic Republic of Congo (DRC). Participants were categorized into two groups based on their history of CSA. Outcome measures included the prevalence of lifetime sexual assaults, perpetration of sexual violence against others, appetitive aggression, current violent behavior, symptoms of PTSD and depression and responses to two treatment modalities: TAU and FORNET.

Results: The group with a history of CSA had significantly higher rates of re-experiencing sexually assaults, especially by superiors, and of perpetrating sexual assaults against others. In addition, this group presented elevated baseline scores in all outcomes (appetitive aggression, current violent behavior, symptoms of PTSD and depression). Regarding effectiveness of treatment arms, the FORNET group demonstrated significantly greater reductions in appetitive aggression levels, PTSD symptoms and depressive symptoms compared to the TAU group, with no difference in treatment effectiveness between participants with and without a history of CSA. However, individuals with CSA showed statistically superior improvements in current violent behavior, with similar score levels to those without CSA after 6-9 months.

Conclusion: CSA among former soldiers was significantly associated with a higher prevalence of PTSD and increased risk of both sexual revictimization and the perpetration of sexual and other violent acts. FORNET demonstrates effectiveness in reducing appetitive aggression, PTSD symptoms, and violent behavior even in the subgroup highly affected by CSA - showing an even greater impact on current violent behavior. The ability of NET to address trauma and perpetration in a chronological sequence and adapt to the specific challenges of CSA likely account for its effectiveness in treating this complexly traumatized population, ultimately contributing to a reduction of violence in post-conflict communities. Special attention should be paid to revictimization during the rehabilitation process of ex-combatants.