Migration history and risk of psychosis: Results from the multinational EU-GEI study

Ilaria Tarricone*, Giuseppe D'Andrea, Hannah E. Jongsma, Sarah Tosato, Charlotte Gayer-Anderson, Simona A. Stilo, Federico Suprani, Conrad Iyegbe, Els Van Der Ven, Diego Quattrone, Marta Di Forti, Eva Velthorst, Paulo Rossi Menezes, Celso Arango, Mara Parellada, Antonio Lasalvia, Caterina La Cascia, Laura Ferraro, Julio Bobes, Miguel BernardoIulio Sanjuán, Jose Luis Santos, Manuel Arrojo, Cristina Marta Del-Ben, Giada Tripoli, Pierre Michel Llorca, Lieuwe De Haan, Jean Paul Selten, Andrea Tortelli, Andrei Szöke, Roberto Muratori, Bart P. Rutten, Jim Van Os, Peter B. Jones, James B. Kirkbride, Domenico Berardi, Robin M. Murray, Craig Morgan

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)


Background Psychosis rates are higher among some migrant groups. We hypothesized that psychosis in migrants is associated with cumulative social disadvantage during different phases of migration. Methods We used data from the EUropean Network of National Schizophrenia Networks studying Gene-Environment Interactions (EU-GEI) case-control study. We defined a set of three indicators of social disadvantage for each phase: pre-migration, migration and post-migration. We examined whether social disadvantage in the pre-and post-migration phases, migration adversities, and mismatch between achievements and expectations differed between first-generation migrants with first-episode psychosis and healthy first-generation migrants, and tested whether this accounted for differences in odds of psychosis in multivariable logistic regression models. Results In total, 249 cases and 219 controls were assessed. Pre-migration (OR 1.61, 95% CI 1.06-2.44, p = 0.027) and post-migration social disadvantages (OR 1.89, 95% CI 1.02-3.51, p = 0.044), along with expectations/achievements mismatch (OR 1.14, 95% CI 1.03-1.26, p = 0.014) were all significantly associated with psychosis. Migration adversities (OR 1.18, 95% CI 0.672-2.06, p = 0.568) were not significantly related to the outcome. Finally, we found a dose-response effect between the number of adversities across all phases and odds of psychosis (â

Original languageEnglish
JournalPsychological Medicine
Publication statusAccepted/In press - 2021


  • First-episode psychosis
  • first-generation migrants
  • migration adversities
  • migration history
  • psychosis risk
  • social disadvantages


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