According to microcensus data, nearly one quarter of the German population has a migration background. This means that either themselves or at least one parent was born without German citizenship. Based on the currently available data and due to the underrepresentation of specific population groups, representative findings on the health of the total population residing in Germany are only possible to a limited degree. Against this backdrop, the Robert Koch Institute initiated the Improving Health Monitoring in Migrant Populations (IMIRA) project. The project aims to establish a migration-sensitive health monitoring system and to better represent people with a migration background in health surveys conducted by the Robert Koch Institute. In this context it is crucial to review and further develop relevant migration-sensitive concepts and appropriate surveying instruments. To achieve this, the concepts of acculturation, discrimination, religion and subjective social status were selected. This article theoretically embeds these concepts. Furthermore, we describe their application in epidemiology as well as provide a proposal on how to measure and operationalise these concepts. Moreover, recommendations for action are provided regarding the potential application of these concepts in health monitoring at the Robert Koch Institute.

Background Prior research has identified perceptions of relative social status to affect mental health. We investigated whether migrants to Germany who perceive that they would have a higher relative social status if they were still in their country of origin experience more depressive symptoms than those who perceive no such status discrepancy. Methods Cross-sectional data were derived from a random sample of residents in the Berlin-Brandenburg region with a Croatian, Polish, Romanian, Syrian and/or Turkish citizenship (n = 728). Participants’ perception of their relative social status in Germany was measured using the MacArthur Scale of subjective social status (SSS). An adapted version of this scale was used to assess respondents’ hypothetical SSS in their country of origin if they had not migrated. Depressive symptoms were measured with the eight-item depression scale of the Patient Health Questionnaire. Diagonal reference models were used to examine whether discrepancies between the two status ratings were associated with depressive symptom severity. Results Most respondents reported a higher (35.6%) or similar (49.0%) hypothetical SSS in their country of origin compared to their SSS in Germany. Respondents whose SSS in Germany was lower than their hypothetical SSS in their country of origin experienced the most severe depressive symptoms. In the diagonal reference models, this association remained statistically significant (p < 0.05), even after adjusting for objective socioeconomic position and other covariates. The pattern was similar for both refugees and non-refugees. Conclusions Our findings indicate that perceptions of having a lower social status in Germany than hypothetically in one’s country of origin are concomitant with poorer mental health among migrants. Prospective data are needed to address questions of causation and the direction of effects. Key messages Migrants who perceived that they would have a higher social status if they had not left their country of origin reported higher depressive symptoms than those with no such status discrepancy. This association persisted after adjusting for objective socioeconomic position in Germany.

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