Study author Johnston acknowledged that his later U.S. trial is important because differences in genetics, risk factors and medical practice in China could mean different results for different countries.
If in a few years the U.S. results turn out the same as those of the China-based study, giving stroke and TIA patients Plavix along with aspirin will likely become standard therapy, he said.
Stroke is a major cause of death and disability around the world, and the fourth leading cause of death in the United States.
More than 795,000 Americans have strokes every year, and in 2008 some 133,000 were fatal, according to the U.S. Centers for Disease Control and Prevention. In addition, about 300,000 Americans have TIAs each year.
To learn more about stroke, visit the U.S. National Library of Medicine.
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