Postpartum anger among low-income women with high rates of trauma exposure.

Few studies have examined anger concerns among postpartum women despite their risk of mood dysregulation. This study examined the performance of the Dimensions of Anger Reactions-5 (DAR-5) scale, a brief screen for problematic anger, in a sample of 1,383 postpartum women in Wisconsin who received perinatal home visiting services. We aimed to analyze the discriminant validity and measurement invariance of the DAR-5, the occurrence of problematic anger symptoms and their co-occurrence with mental health concerns, and the association between elevated anger levels and exposure to potentially traumatic events in childhood and adulthood. Descriptive statistics for anger symptoms and their associations with depression, anxiety, and PTSD were calculated. Psychometric properties of the DAR-5 were assessed via confirmatory factor analyses, and associations between trauma exposure and anger were evaluated as bivariate and partial correlations. Approximately 21% of the sample exhibited problematic anger based on an established DAR-5 cutoff score (≥ 12). Anger symptoms co-occurred with posttraumatic stress disorder (PTSD), depressive, and anxiety symptoms, though the DAR-5 sufficiently distinguished anger from these correlated symptom profiles. The DAR-5 also demonstrated acceptable measurement invariance across levels of trauma exposure. Higher levels of trauma exposure in childhood and adulthood significantly increased the risk of problematic anger even after controlling for PTSD, anxiety, and depressive symptoms, partial $\gamma$ _pb range: .07-.16. The findings suggest the DAR-5 is a valid brief screen for anger in postpartum women. Increased attention should be paid to elevated anger and the co-occurrence of other mental health concerns following childbirth.