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Hospital OperationsGenerated accuracy model review: 2026-05-06

OR Utilization 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

  • OR utilization = (case hours + turnover hours) / available room hours x 100.

Test cases

Default input regression check

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

Inputs

  • OR Rooms: 6
  • Block Hours per Day: 10 hr/day
  • Operating Days: 5
  • Case Hours: 195 hr
  • Turnover Hours: 30 hr

Expected outputs

  • OR Utilization: 75.00%
  • Available Room Hours: 300 hr
  • Unused Room Hours: 75 hr

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

  • OR Rooms accepts numeric values.
  • Block Hours per Day accepts values in hr/day.
  • Operating Days accepts numeric values.
  • Case Hours accepts values in hr.
  • Turnover Hours accepts values in hr.
  • OR Utilization is displayed as a percentage.
  • Available Room Hours is displayed in hr.
  • Unused Room Hours is displayed in hr.

Rounding rules

  • Number displays use up to 2 decimal places in the calculator UI.
  • Percent outputs are displayed with two decimal places.
  • Input precision follows configured step values where provided.

Version history

1.0.0 - 2026-05-06

Generated accuracy and testing page from the current or-utilization-calculator calculator definition.

Change log

2026-05-06

Published default regression test documentation and metadata fallbacks for OR Utilization 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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