Canadian researchers found that people who checked into a hospital on the weekend had more severe strokes than those who came in during the week.
In the journal Neurology researchers report that 8 percent of those who arrived on the weekend died within seven days, compared to 7 percent who came in during the week.
But doctors stress that say people should never delay treatment if they think they are having a stroke.
Symptoms include sudden weakness of the face or a limb, sudden confusion, trouble speaking or walking or a sudden headache.