Approximately what percentage of strokes are haemorrhagic?

• A. About 15 percent
• B. About 50 percent
• C. About 5 percent
• D. About 30 percent

Answer: (A)

Strokes come in two main types: hemorrhagic and ischemic. Hemorrhagic strokes occur when a blood vessel in the brain bleeds, and they make up a minority of cases. Across population data, about one in six to one in seven strokes are hemorrhagic, which is roughly 15 percent. The rest, about 85 percent, are ischemic, caused by blocked vessels. So the closest approximation is about 15 percent. The other options are too high or too low given this distribution.