Background: Little is known about the economic value of quality improvement (QI) interventions, including those related to central-line-associated bloodstream infection (CLABSI) and catheter-associated urinary tract infection (CAUTI). Methods: We searched MEDLINE, Econlit, the Centre for Reviews & Dissemination Economic Evaluations, Greylit, and Worldcat from January 1, 2004 to May 15, 2015; examined lists of references; [...]