How Many Die From Medical Mistakes In U.S. Hospitals?

It seems that every time researchers estimate how often a medical mistake contributes to a hospital patient’s death, the numbers come out worse.

In 1999, the Institute of Medicine published the famous “To Err Is Human” report, which dropped a bombshell on the medical community by reporting that up to 98,000 people a year die because of mistakes in hospitals. The number was initially disputed, but is now widely accepted by doctors and hospital officials — and quoted ubiquitously in the media.

In 2010, the Office of Inspector General for the Department of Health and Human Services said that bad hospital care contributed to the deaths of 180,000 patients in Medicare alone in a given year.

In the four studies, which examined records of more than 4,200 patients hospitalized between 2002 and 2008, researchers found serious adverse events in as many as 21 percent of cases reviewed and rates of lethal adverse events as high as 1.4 percent of cases.

By combining the findings and extrapolating across 34 million hospitalizations in 2007, James concluded that preventable errors contribute to the hospital patients annually.

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