Cuento de nunca acabar [never-ending story]: Compounding trauma and mental health among undocumented Latinx immigrants.

Research examining the effects of traumatic events on undocumented Latinx immigrants often focuses on assessing posttraumatic stress disorder or general psychological distress, which may obscure the field's understanding of how trauma exposure impacts other common mental health disorders (e.g., anxiety, depression). This study sought to assess the cumulative, individual, and timing effects of immigration-related traumatic events on anxiety and depressive symptoms among undocumented Latinx immigrants. Participants were 253 undocumented Latinx immigrants recruited using respondent-driven sampling who reported their history of immigration-related trauma exposure and symptoms of depression and anxiety. Results suggest that cumulative immigration-related trauma was significantly associated with increases in anxiety and depressive symptoms, τ = .26. Significant positive correlations were found for cumulative trauma at each point in the immigration process (i.e., before immigration, while in transit to the United States, and while living in the United States) such that increases in the number of events were associated with higher anxiety and depressive symptom levels, τ = .11-.29. Trauma frequency differed throughout the immigration process such that some events more commonly occurred before immigration or during transit to the United States, whereas others occurred while an individual resided in the United States. Random forest algorithms uncovered differences in the relative importance of individual traumatic events in explaining the variance of depressive, R 2 = .13, and anxiety symptoms, R 2 = .14. The findings highlight the importance of providing trauma-informed care when treating anxiety and depression among undocumented Latinx immigrants and considering multidimensional epidemiological approaches in assessing immigration-related trauma.