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Animal Mortality Rate — result sheet
Calculate an interval mortality rate per 1,000 and as a percentage from deaths and the number surviving at the interval start.
Inputs used
Results
Visual chart
Breakdown
Calculation steps
Returned data table
Formula and methodology
Formula: Mortality per 1,000 = deaths / surviving x 1,000; mortality percentage = deaths / surviving x 100.
This life-table arithmetic treats surviving as the count present at the beginning of the defined interval and deaths as a subset of that count. It reports two equivalent scales and does not diagnose an individual, forecast a population, or adjust for age, exposure, migration, or censoring.
This result follows the calculator's declared inputs, precision, validation boundaries, and model limits.
Input contract
- Deaths during interval — animals; minimum 0; maximum 1000000000000
- Surviving at interval start — animals; Must be at least the deaths count.; minimum 1; maximum 1000000000000
Worked example
| Input | Value |
|---|---|
| Deaths during interval | 25 |
| Surviving at interval start | 1000 |
Mortality is 25 per 1,000, or 2.5 percent.
Assumptions and limits
- Deaths and surviving are finite safe whole numbers, and surviving is positive.
- Deaths occur within the stated interval and cannot exceed the number surviving at its beginning.
- The result is a descriptive interval proportion, not a clinical diagnosis, causal claim, or population forecast.
Calculator note
Source and methodology
Use the official WorldCalculate methodology policy for the source, formula, precision, and boundary standards behind this calculator.
Planning estimate, not financial, medical, legal, or professional advice. © WorldCalculate — reuse with attribution. Built and curated by Hassan ALRowaie.
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