Table 1.

Emergency department (ED) intervals (determine the variables used for correlation analysis for linear relationships) address independent variable comments(8), as well as why intervals attributed to the physician(6), corresponding Meditech intervals and definitions:

ED interval	Meditech interval	Definitions
Door to room	Received to room	Time it takes for the patient to be placed back into a room i.e. bed availability for evaluation, waiting room time
Room to doctor (LIP)	Room to provider	Time it takes for a physician to see the patient in the room after the patient is placed in the room, interval directly impacted by physician getting into the room
ED length of stay for discharged patients	Received to dismiss	The time interval in minutes between arrival time and discharge time
Admit decision to depart ED time	Admit to dirty bed	The time interval in minutes between the decision to admit and the physical departure of the patient from the ED treatment area, ED boarding time
Doctor to discharge time	Provider to dismiss	The time interval in minutes between MD contact with the patient and doctor orders discharge time. Time determined by the physician directed evaluation.
Total patients per day	New arrivals	Total number of patients that signed up for triage that day.

Definitions from a consensus group created to address standardization of performance measures in emergency medicine. ¹¹