P. E. Simola

Abstract Subclinical depression among peacekeeping veterans remains understudied despite its prevalence and potential to progress to major depression. This study examined associations between deployment-related traumatic stressors and subclinical depressive symptoms in 2,258 Finnish peacekeeping veterans. Subclinical depression was measured using the Depression Scale (DEPS) and traumatic stressor exposure via a 16-item questionnaire. Frequent traumatic stressor exposure was associated with an increased risk of subclinical depression, with 5 out of 16 stressors showing significant associations. The strongest predictor was feeling powerless to help sufficiently within one’s role as peacekeeper, suggesting moral injury significantly contributes to the development of subclinical depression. These results highlight the importance of developing post-deployment screening to detect non-danger-based stressors and subclinical conditions that carry the risk of progressing into severe mental health disorders.