About 3.1 million fewer hospital-acquired conditions occurred between 2010 and 2015. Most of the decline was due to a 42 percent reduction in adverse drug events, a 23 percent drop in pressure ulcers and a 15 percent reduction in catheter-associated urinary tract infections.
Source: Agency for Healthcare Research and Quality, National Scorecard on Rates of Hospital-Acquired Conditions 2010 to 2015: Interim Data From National Efforts to Make Health Care Safer.