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. Author manuscript; available in PMC: 2017 Aug 1.
Published in final edited form as: Soc Psychiatry Psychiatr Epidemiol. 2016 Dec 28;52(2):155–162. doi: 10.1007/s00127-016-1322-4

Table 4. crude incidence rates, crude and adjusted (by age and gender) incidence rate ratio (IRR) in native-born Italians and migrants for all psychosis and by diagnostic category.

Incidence rates Crude rates (95% CI) Crude IRR (95% CI) IRR adjusted by age and gender* (95% CI)
All psychosis
Native-born Italians 14.8 (12.6-16.9) 3.12 (1.99-4.91) 2.78 (1.76-4.39)
Migrants 46.2 (26.5-66)
Schizophrenia F20
Native-born Italians 8.6 (6.9-10.2) 4.37 (2.62-7.29) 4.02 (2.39-6.75)
Migrants 37.4 (19.6-55.2)
Affective psychoses F30-33
Native-born Italians 1.5 (0.8-2.1) - 0
Migrants 0
Other psychoses F21-29
Native-born Italians 4.7 (3.5-5.9) 1.88 (0.68-5.18) 1.59 (0.58-4.42)
Migrants 8.8 (0.2-17.4)

95% CI: 95% confidence interval; IRR: incidence rate ratio. IRR are adjusted by age and gender by Poisson Regression.