Table 4

Population attributable risk according to family history of mental illness and place of birth

Variable Population attributable risk (%)
Mental illness in a parent or sibling 21.9
Schizophrenia in a parent or sibling 5.4
Schizophrenia-like psychoses in a parent or sibling 3.7
Other mental disorders in a parent or sibling 14.0
Place of birth, 5-level classification 28.9
Place of birth, 12-level classification 34.3
Mental illness in a parent or sibling and 5-level classification of place of birth 44.1
Mental illness in a parent or sibling and 12-level classification of place of birth 48.3