Although there could be various explanations for these findings, one might be the psychological stress that comes from settling in a foreign country—the stress of having to learn a new language, looking different, or not being able to find work. Indeed, the unemployment rates among immigrants from low-income countries in this study were three times higher than those of Danish-born residents.
More information about research on the link between immigration and schizophrenia can be found in Psychiatric News here. Information about the challenges of being an international medical graduate in America can be found in Psychiatric News here. Also, see a letter to the editor in the American Journal of Psychiatry in which the Swedish researchers discuss this study.