Doctors gave the test to more than 3,000 elderly adults. Participants received points for having an older age or poor performance on memory tests. They also received points for less familiar risk factors such as being underweight, abstaining from alcohol and taking longer than 45 seconds to button a shirt.
Results showed people who scored three points or less had a low risk for developing the disease in the next six years. In contrast, those who scored eight or more points had a very high risk, 56 percent.