Refugees are at an elevated risk of some mental disorders with studies highlighting the contributing role of post-migration factors. Studies of migrant groups show neighborhood social composition, such as ethnic density, to be important. This is the first longitudinal study to examine this question for refugees and uses a novel quasi-experimental design.

We followed a cohort of 44 033 refugees from being first assigned housing under the Danish dispersal policy, operating from 1986 to 1998, until 2019. This comprised, in effect, a natural experiment whereby the influence of assigned neighborhood could be determined independently of endogenous factors. We examined three aspects of neighborhood social composition: proportion of co-nationals, refugees, and first-generation migrants; and subsequent incidence of different mental disorders.

Refugees assigned to neighborhoods with fewer co-nationals (lowest v. highest quartile) were more likely to receive a subsequent diagnosis of non-affective psychosis, incident rate ratio (IRR) 1.25 (95% confidence interval (CI) 1.06–1.48), and post-traumatic stress disorder (PTSD), IRR 1.21 (95% CI I.05–1.39). A comparable but smaller effect was observed for mood disorders but none observed for stress disorders overall. Neighborhood proportion of refugees was less clearly associated with subsequent mental disorders other than non-affective psychosis, IRR 1.24 (95% CI 1.03–1.50). We found no statistically significant associations with proportion of migrants.

For refugees, living in a neighborhood with a lower proportion of co-nationals is related to subsequent increased risk of diagnosed mental disorders particularly non-affective psychosis and PTSD.

Jordan has received more than three million refugees from bordering countries during times of conflict, including over 600 000 Syrian refugees between 2011 and 2021. Amidst this humanitarian crisis, a new mental health system for Syrian refugees has developed in Jordan, with most clinical services administered through non-governmental organizations. Prior studies have identified increased risk of psychiatric disorders in refugee populations and significant barriers for Syrian refugees seeking mental health treatment, but few have reviewed the organization or ability of local systems to meet the needs of this refugee population.

Qualitative interviews of mental health professionals working with refugees in Jordan were conducted and thematically analyzed to assess efficacy and organizational dynamics.

Interviewees described barriers to care inherent in many refugee settings, including financial limitations, shortages of mental health professionals, disparate geographic accessibility, stigma, and limited or absent screening protocols. Additional barriers not previously described in Jordan were identified, including clinician burnout, organizational metrics restricting services, insufficient visibility of services, and security restrictions. Advantages of the Jordanian system were also identified, including a receptive sociopolitical response fostering coordination and collaboration, open-door policies for accessing care, the presence of community and grassroots approaches, and improvements to health care infrastructure benefiting the local populace.

These findings highlight opportunities and pitfalls for program development in Jordan and other middle- and low-income countries. Leveraging clinician input can promote health system efficacy and improve mental health outcomes for refugee patients.

There is a need for ecological approaches to guide global mental health programmes that can appropriately address the personal, family, social and cultural needs of displaced populations. A transactional ecological model of adaptation to displacement was developed and applied to the case of Syrian refugees living in Jordan.

Syrian and Jordanian psychosocial workers (n = 29) supporting the Syrian refugee community in Jordan were interviewed in three waves (2013–2016). A grounded-theory approach was used to develop a model of key local concepts of distress. Emergent themes were compared with the ecological model, including the five ADAPT pillars identified by Silove (2013).

The application of the ecological concept of niche construction demonstrated how the adaptive functions of a culturally significant concept of dignity (karama) are moderated by gender and displacement. This transactional concept brought to light the adaptive capacities of many Syrian women while highlighting the ways that stigma may restrict culturally sanctioned opportunities for others, in particular men. By examining responses to potentially traumatic events at the levels of individual, family/peers, society and culture, adaptive responses to environmental change can be included in the formulation of distress. The five ADAPT pillars showed congruence with the psychosocial needs reported in the community.

The transactional concepts in this model can help clinicians working with displaced people to consider and formulate a broader range of causal factors than is commonly included in individualistic therapy approaches. Researchers may use this model to develop testable hypotheses.