Employer group battles medical errors.

It's easy to be cynical about Big Business. But a group of Fortune 500 companies has recently focused on something beyond the bottom line: Preventable medical errors in hospitals.

The Leapfrog Group, a consortium of large employers sponsored by the Business Roundtable, has put together a strategy to change health care practices that foster mistakes leading to injury or death. Currently, medical errors are the eighth leading cause of death in the U.S.

What began loosely as a five-member group with altruistic ideals has blossomed into an organization of 60 lar