"THINK" Before You Order: Multidisciplinary Initiative to Reduce Unnecessary Lab Testing.

Inappropriate daily lab testing can have adverse effects on patients, including anemia, pain, and interruption of sleep. We implemented a student-led, multifaceted intervention featuring clinician education, publicity campaign, gamification, and system changes, including a novel nurse-driven protocol to reduce unnecessary daily lab testing in a teaching hospital. We applied a quasi-experimental interrupted time series design with a segmented regression analysis to estimate changes before and after our 14-month intervention with a comparison to a control surgical unit.