Table 2. Data sampling definition.

NPO: nulla per os; OR: operating room.

Term	Definition
Scheduled Start Time	Time surgical case is scheduled to start based on daily OR template
Holding Room Time	Time patient has arrived in preoperative holding suite from Same Day Surgery admission or inpatient room
Anesthesia Start Time	Anesthesia provider assumes patient care
Difference	Minutes difference between Scheduled Start and Anesthesia Start
NPO	Minutes difference between Anesthesia Start and midnight the day prior to the surgical procedure