The value of routine preoperative testing before most surgical procedures is widely considered to be low. To improve the quality of preoperative care and reduce waste, 2 professional societies released guidance on use of routine preoperative testing in 2002, but researchers and policymakers remain concerned about the health and cost burden of low-value care in the preoperative setting.OBJECTIVE To examine the long-term national effect of the 2002 professional guidance from the American College of Cardiology/American Heart Association and the American Society of Anesthesiologists on physicians' use of routine preoperative testing.
DESIGN, SETTING, AND PARTICIPANTSRetrospective analysis of nationally representative data from the National Ambulatory Medical Care Survey and National Hospital Ambulatory Medical Care Survey to examine adults in the United States who were evaluated during preoperative visits from January 1, 1997, through December 31, 2010. A quasiexperimental, difference-in-difference (DID) approach evaluated whether the publication of professional guidance in 2002 was associated with changes in preoperative testing patterns, adjusting for temporal trends in routine testing, as captured by testing patterns in general medical examinations.
MAIN OUTCOMES AND MEASURESPhysician orders for outpatient plain radiography, hematocrit, urinalysis, electrocardiogram, and cardiac stress testing.
RESULTSDuring the 14-year period, the average annual number of preoperative visits in the