NIH-funded study provides clues to differences in stroke deaths between blacks and whites.  Blacks between the ages of 45 and 54 die of strokes at a rate that is three times greater than their white counterparts, according to the Reasons for Geographic and Racial Differences in Stroke (REGARDS) study, which looked at stroke incidence and mortality of nearly 30,000 participants over the age of 45 from an ethnically and demographically diverse sample of the U.S. population. The findings suggest that the higher risk of death from strokes in blacks is due mostly to the higher incidence in this population, and not to worse outcomes following stroke.