The new study on stroke symptoms comes from researchers including Virginia Howard, MSPH, of the University of Alabama at Birmingham.
By telephone, Howard's team interviewed more than 18,400 U.S. adults aged 45 and older (average age: nearly 66).
All of the participants said they had never been told that they had had a stroke or a "mini-stroke" (transient ischemic attack, or TIA). The group was evenly split between whites and blacks. Blacks are at higher risk of stroke than whites.
Half of the participants live in the so-called "stroke belt" states -- North Carolina, South Carolina, Georgia, Alabama, Mississippi, Tennessee, Arkansas, and Louisiana -- which have particularly high stroke rates.