| Hollander et al.15 (Sweden) |
Refugee migration and risk of schizophrenia and other non-affective psychoses: cohort study of 1.3 million people in Sweden |
Refugees, n=24 123
Non-refugee migrants, n=132 663
Swedish-born population, n=1 191 004 |
Born after 1984:
14 years and older |
Refugees: 44.2%
Non-refugee migrants: 50.8%
Swedish-born population: 48.6% |
8.9 Million person years
First recorded diagnosis between 1 January 1998 and 31 December 2011 |
Diagnosis of non-affective psychotic disorder (ICD-10 F20–29) |
Cox proportional hazard models, Lexis expansion for stratifying the participants according to the age at risk, adjustment for age at risk, sex, and their interaction, adjustment for disposable income and population density, sensitivity analyses, likelihood ratio tests |
| Anderson et al.16 (Ontario, Canada) |
Incidence of psychotic disorders among first-generation immigrants and refugees in Ontario |
Refugees, n=95 148
Immigrants, n=323 285
General population, n=3 866 261 |
14–40 Years of age as of 1 April 1999:
Refugees: 29.7
Immigrants: 29.0
General population: 27.9 |
Refugees: 40.1%
Immigrants: 51.5%
General population: 49.7% |
10 Years |
Primary discharge diagnosis of schizophrenia or schizoaffective disorder from a general hospital bed (ICD-10 F20 or F25), psychiatric hospital bed (DSM-IV code 295.x) or billing claims or emergency department visits (ICD-10 F20 or F25) |
Poisson regression adjusting for age and sex, Poisson regression with scaled deviance to estimate the independent effects of sex, age at migration, length of stay in Canada, urban residence, refugee status and income quintile |
| Norredam et al.17 (Denmark) |
Risk of mental disorders in refugees and native Danes: a register-based retrospective cohort study |
Refugees, n=29 139
Native Danes, n=116 556 |
18 Years and older:
Refugees: 32.9
Native Danes: 32.9 |
Refugees: 44.4%
Native Danes: 44.4% |
Refugees: 8.0 years
Native Danes: 8.1 years |
First-time psychiatric contact, diagnosis of psychotic disorder (ICD-10 F20–29) |
Poisson regression model including sex, age and region of origin |
