Hospital OperationsGenerated accuracy model review: 2026-05-06

Average Length of Stay Calculator accuracy and testing

This page documents how Calwarden builds trust for this calculator: source notes, regression-style default tests, limitations, assumptions, unit handling, rounding, and visible change history.

Formula source

ALOS = inpatient days / discharges. Bed-days vs target = discharges x (actual ALOS - target ALOS).

Test cases

Default input regression check

Generated from the checked-in default inputs and calculate function.

Inputs

Inpatient Days: 1,260 days
Discharges: 300
Target ALOS: 4 days

Expected outputs

Average Length of Stay: 4.2 days
Bed-Days vs Target: 60 days
Discharges per Bed-Day: 0.24

Known limitations

This page documents the checked-in calculator logic and does not certify results for every real-world edge case.
Use the result as a planning estimate unless the calculator page states a stricter purpose.

Assumptions

The calculators use simple transparent formulas rather than vendor-specific analytics models.
Inputs are processed locally in the browser and are not stored by Calwarden.
This is operations planning math, not medical, legal, staffing, billing, or financial advice.

Unit handling

Inpatient Days accepts values in days.
Discharges accepts numeric values.
Target ALOS accepts values in days.
Average Length of Stay is displayed in days.
Bed-Days vs Target is displayed in days.

Rounding rules

Number displays use up to 2 decimal places in the calculator UI.
Input precision follows configured step values where provided.

Version history

1.0.0 - 2026-05-06

Generated accuracy and testing page from the current average-length-of-stay-calculator calculator definition.

Change log

2026-05-06

Published default regression test documentation and metadata fallbacks for Average Length of Stay Calculator.

Calculator transparency

Accuracy pages are generated from checked-in calculator definitions and can be upgraded with curated review metadata over time.

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