1 percent of population accounts for 22 percent of health-care spending, study finds

Just 1 percent of Americans were responsible for 22 percent of the nation's $1.26 trillion in health-care costs in 2009, and 5 percent accounted for 50 percent of costs, a federal report has found.

The numbers may seem shocking, but the concentration has dropped in recent years; in 1996, the top 1 percent of the population accounted for 28 percent of health-care spending.

"The report's findings can be used to predict which consumers are most likely to drive up health care costs and determine the best ways to save money," reports Kelly Kennedy of USA Today. (Read more)