Visualizing temporal patterns of demand, throughput and crowding in an emergency department
Related Experiment Video
Updated: Jul 2, 2026

Trajectory Data Analyses for Pedestrian Space-time Activity Study
Published on: February 25, 2013
1School of Medicine,University of California, San Diego, La Jolla, CA, USA.
Abstract:
Emergency department (ED) operational data were calculated at 10-minute intervals throughout 2006 (n = 52561) in the adult ED of an academic medical center. Several operational parameters per observation were measured to better understand temporal patterns of input, throughput, and output of medical services. This may allow for improvement of predictive models of overcrowding. Visualization of this dataset is structured by a calendar template, facilitating discovery of cyclic patterns at diurnal, weekly, and monthly scales.
Related Concept Videos
Flow Sheet
Here's a closer look at the examples of flowsheets commonly used by nurses:
Graphic Sheet Documentation:
Interpreting Run Charts
Methods of Documentation IV: Focus Charting
It typically involves three columns for recording information:
Methods of Documentation VI: Case Management Model
For example, a patient with a chronic illness...
