Improved patient safety and fewer mistakes at U.S. hospitals saved the lives of roughly 50,000 people from 2011 to 2013, the Obama administration reported Tuesday. Incidents of hospital-induced harm – such as adverse drug events, infections, falls and bedsores – fell by 17 percent, or an estimated 1.3 million episodes, from 2010. The improvements, driven by a number of public and private initiatives, saved an estimated $12 billion in health care spending, according to a new government report that found dramatic progress in the fight to curb preventable medical injuries at U.S. hospitals.