Comparison of stroke mortality in Finnish-born migrants living in Sweden 1970-1999 and in Swedish-born individuals.

A limited number of studies have been found on stroke mortality in migrants showing higher mortality for some groups. Influence of time of residence has been studied by one research group. An earlier study showed a significantly higher number of deaths in Diseases of the circulatory system in Finnish migrants compared with native Swedes. To test the hypothesis of a higher mortality in and a decrease in mortality over time in stroke among Finnish migrants in Sweden. The study was based on National Population data, the study population included 321,407 Swedish and 307,174 foreign born persons living in Sweden 1987-1999. Mean age was lower at time for death for Finnish migrants than native Swedes, men 5.1 years difference and women 2.3 years. The difference decreased over time. The risk of death by stroke was higher for migrants with short time of residence than with long time (≤10 years, OR 1.61-1.36 vs ≥11 year, OR 1.18). Migrants with short time of residence died 9.8-5.3 years earlier than native Swedes. The hypothesis was confirmed and an indication of adjustment to life in the new country was found. International studies show similar results for other migrant groups but further studies are needed to verify if the same pattern can be found in other migrants groups in Sweden and to generalise the findings.