Emergency Medicine
Community ED Overcrowding Scale calculator
Enter the published formula inputs below to calculate and interpret this score.
Clinical inputs
Allowed range: 0–200 patients
The reduced model counts admitted critical-care patients still in the emergency department.
Allowed range: 0–240 hours
Hours that the admitted patient who has waited longest is still in the emergency department.
Allowed range: 0–500 patients
Allowed range: 0–20 patients/bed
Number of patients in the emergency department divided by the number of emergency-department beds.
Allowed range: 0–200000 visits/year
A spline term is added only when annual visits reach 18,811, 43,012, 49,466, or 67,273.
Result
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Clinical inputs
- Admitted critical-care patients still in the EDAccepted range: 0 to 200
- Longest boarding time of an admitted patient (hours)Accepted range: 0 to 240
- Patients in the waiting roomAccepted range: 0 to 500
- Patients per emergency-department bed (patients/bed)Accepted range: 0 to 20
- Emergency-department visits per year (visits/year)Accepted range: 0 to 200000
Primary source
Weiss SJ et al. Am J Emerg Med. DOI: 10.1016/j.ajem.2014.08.035. PMID: 25234796. CEDOCS = −30.39 + 3.00×critical-care patients + 0.53×longest boarding time in hours + 1.16×waiting-room patients + 20.66×patients per ED bed + 0.00126×annual visits, plus cubic spline terms at 18,811, 43,012, 49,466, and 67,273 visits. A term is included only when annual visits reach that knot. The fitted score is the 0–100 visual-analogue scale. A value over 50 mm falls in a crowded label. The paper does not split the scale below 50 mm into numeric segments. (2014)
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