The level of non-Western immigrants' use of acute psychiatric care compared with ethnic Norwegians over an 8-year period.

Immigrants are assumed by many to have more mental health problems than the population in the countries they have emigrated to, and clinicians have the impression that an increasing number of non-Western immigrants are referred to acute psychiatric care. Patients referred over an 8-year period to an acute care facility, responsible for a catchment area of close to 100,000 inhabitants in Oslo, Norway, were scrutinized to study the latter assumption. In total 792 men and 701 women (47.0%) were referred. There were 168 men and 59 women among the non-Western immigrants, i.e. 26.0% of the non-Western immigrants were women, whereas 50.2% or 611 out of 1217 ethnic Norwegians were women. Non-Western immigrants were referred twice as often in 2007, n=40, as in 2000, n=19. Non-Western immigrants as a percentage of the other referred patients increased from 15.2% to 16.0% in 2006, which was lower than the representation in the general population. Mean age was lower for non-Western immigrants, 34.6 (standard deviation, s=14.7) than for ethnic Norwegians 39.5 (s=11.6). Mean length of stay was lower for ethnic Norwegians. If the prevalence of mental disorders is the same or higher in immigrants than in the original population, this study indicates that they are under-represented among referred patients from the catchment area population. This seems to be the case especially for women.