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Neighbourhood Ethnic Density and Incidence of Psychosis – First and Second Generation Migrants Compared

Published online by Cambridge University Press:  23 March 2020

P. Schofield ,
J. Das-Munshi ,
L. Becares  and
E. Agerbo
P. Schofield
Affiliation:
King's College London, Division of Health & Social Care Research, London, United Kingdom
J. Das-Munshi
Affiliation:
King's College London, Health Service & Population Research Department, Institute of Psychiatry, Psychology & Neuroscience, London, United Kingdom
L. Becares
Affiliation:
The University of Manchester, Centre on Dynamics of Ethnicity, Manchester, United Kingdom
E. Agerbo
Affiliation:
Aarhus University, CIRRAU, Centre for Integrated Register-based Research, Aarhus, Denmark

Abstract

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Introduction

Living in an area with few people from the same ethnic background has been associated with increased incidence of psychosis (the ethnic density effect).

Objectives

Compare associations between neighbourhood ethnic density and incidence of non-affective psychosis for first and second generation migrants.

Methods

Population based cohort (2.2 million) of all those born 1st January 1965 or later and living in Denmark on their 15th birthday. We looked at a total of 106,000 migrants, including 62% first generation migrants. Ethnic density was determined at age 15 and we adjusted for age, gender, calendar period, parental psychiatric history and parental income at age 15.

Results

For the first generation, we found no evidence that rates of non-affective psychosis were related to neighbourhood ethnic density for migrants from Africa (comparing lowest and highest quintiles): IRR 1.02 (95% CI 0.6–1.73), and the Middle East: IRR 0.96 (CI 0.68–1.35) and only weak evidence for migrants from Europe (excluding Scandinavia): IRR 1.35 (CI 0.98–1.84). Conversely, for the second generation rates of non-affective psychosis were increased for migrants from Africa in lower ethnic density neighbourhoods (comparing lowest and highest quintiles): IRR 3.97 (95% CI 1.81–8.69), Europe (excluding Scandinavia): IRR 1.82 (CI 1.28–2.59) and the Middle East: IRR 2.42 (CI 1.18–4.99).

Conclusions

There is strong evidence for an area ethnic density effect on psychosis incidence for second generation migrants, but not for first generation migrants. This could reflect a greater resilience among the latter group to the adverse effects of minority status.

Disclosure of interest

The authors have not supplied their declaration of competing interest.

Type
e-Poster Walk: Epidemiology and social psychiatry
Information
European Psychiatry , Volume 41 , Issue S1: Abstract of the 25th European Congress of Psychiatry , April 2017 , pp. s249
Copyright
Copyright © European Psychiatric Association 2017
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