Estimate emergency-department crowding from occupancy, admitted patients, critical-care patients, and wait times.
Complete every required field, then select the calculate button.
Educational estimate only—not medical advice, a diagnosis, or a treatment instruction. This operational estimate depends on consistent local definitions and should be interpreted with real-time department conditions.
NEDOCS models emergency-department crowding from patient counts, bed capacity and waiting-time inputs.
This is an operational crowding model for a department, not a diagnosis, triage decision or prediction for one patient.
Use the nedocs score as a transparent arithmetic check. Keep the original values beside the answer so another reader can see what was included and what was left out.
The nedocs score rejects values that make its formula undefined. Do not type symbols or unit names inside a numeric field.
| Input | What it means |
|---|---|
| Total number of beds in ED | The number to test or transform; use the integer or real-number domain stated in the formula. |
| Total number of beds in the hospital | The number to test or transform; use the integer or real-number domain stated in the formula. |
| Total number of the patients in ED | The number to test or transform; use the integer or real-number domain stated in the formula. |
| Critical care patients | Use the observed finding or laboratory value for this criterion, following the definition shown in the form. |
| Number of admits in the ED | The number to test or transform; use the integer or real-number domain stated in the formula. |
| Waiting time of the last admitted patient | Elapsed time or duration in the unit selected on the form. |
| Waiting time of longest waiting room patient | Elapsed time or duration in the unit selected on the form. |
An ED with 40 patients and 20 treatment spaces has a patient-to-space ratio of 2 before the other model terms.
Practical check: With 20 emergency beds, 200 hospital beds, 18 patients, 2 critical-care patients, 4 admits, and waits of 30 and 20 minutes, the page returns its bounded crowding score.
Work through that example before entering your own figures. It is an easy way to catch a wrong field, unit or percentage format.
Use the calculation to make the method and its inputs easier to check with a healthcare professional. Its meaning depends on the clinical setting and on whether the underlying method is appropriate for that person.
This is an operational crowding model for a department, not a diagnosis, triage decision or prediction for one patient.
Read the result with its unit, period and denominator. A percentage without its base, or a money figure without its currency and period, is easy to misunderstand.
Try changing one input at a time. A realistic low and high case often tells you more than a single answer shown with many decimal places.
Round at the end. Long decimals from a calculator do not make a measured, estimated or accounting input more precise.
If another source disagrees, compare the exact definition and formula first. Similar names may hide different standards, timing rules or included items.
For decisions involving health, safety, regulation, contracts or substantial money, check the original source and consult an appropriately qualified person.
A useful review note for the nedocs score includes the date, input source, selected units and final rounded value. This takes only a moment and prevents a bare result from being mistaken for a fresh measurement or a broader conclusion.
The worked example is intentionally simple. Real records may contain adjustments, missing values or definitions that the form cannot infer. Resolve those questions before entering a number rather than trying to explain an unsuitable result afterward.
Before sharing this result, read it once without the surrounding page. If the unit, time period, base value and purpose are not obvious, add them. Clear labels are more useful than extra digits and make the calculation easier to verify.
For the nedocs page, keep the worked example nearby while checking your own entry. It provides a quick reference for the expected scale and display format.
The nedocs score applies the formula described above to the values entered on this page.
This is an operational crowding model for a department, not a diagnosis, triage decision or prediction for one patient.
Repeat the worked example first. For nedocs score, it should agree with this check: With 20 emergency beds, 200 hospital beds, 18 patients, 2 critical-care patients, 4 admits, and waits of 30 and 20 minutes, the page returns its bounded crowding score.
It may use another definition, factor, period or rounding rule. This page has this specific limit: This is an operational crowding model for a department, not a diagnosis, triage decision or prediction for one patient.
Keep working digits during the arithmetic, then round the nedocs score answer to match the precision of the input values.
Zero is accepted where it has a real meaning, but the nedocs score rejects a zero divisor or another value that makes the formula undefined.
Use the nedocs score to check arithmetic. Review the underlying records and obtain suitable professional advice when the decision has serious consequences.