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2004 MAR 4 - (NewsRx.com & NewsRx.net) -- Women aged 55 and older have a one in five chance of suffering a stroke during their lifetime, while men the same age have a one in six chance, according to data from the Framingham Heart Study.
The findings were presented at the American Stroke Association's 29th International Stroke Conference, held in San Diego, California, in February 2004.
"The lifetime risk of stroke has not been previously reported in the U.S. population," said study lead author Sudha Seshadri, MD, assistant professor of neurology at the Boston University School of Medicine. "This data estimates categories defined by age, sex, and baseline blood pressure, and may identify risk factors that may motivate adults to adopt a healthier lifestyle."
Researchers studied 4,883 participants from the original Framingham Heart Study who survived stroke-free to age 55. The participants were followed at 2-year intervals for up to 40 years or until they had a first stroke, developed Alzheimer's disease, or died. Data from a total of 114,300 person-years were collected.
Among the participants, 859 participants developed a stroke, 86% of which were ischemic (caused by blood clots that cut off blood supply to the brain).
Researchers then calculated stroke risk at ages 55, 65, 75, and 85.
"In women the lifetime stroke risk was 21% at age 55, while in men it was 17% at age 55. This risk was roughly the same at ages 65 and 75," Seshadri said.
Source: HighBeam Research, Lifetime risk higher for women, those with high blood pressure.