This calculator was prepared for a project funded
by EuFMD, and is intended to support the analysis of surveillance data to demonstrate freedom from FMD.
Nevertheless, it is a generic calculator and can be used for other diseases as well.
This tool calculates the cumulative probability of freedom from disease, based on the analysis of
herd-level risk-based surveillance data over time (with varying probabilities of introduction over time).
It allows for one dichotomous herd-level risk factor,
one dichotomous animal-level risk factor, and up to three surveillance components with different sensitivity.
As detailed herd-level data is required for multiple surveillance components, this tool uses two types
of data input:
Once data is pasted, click the submit button at the bottom of the page. Then scroll to the bottom of the
returned page to view the results of the analysis.
Copy the relevant data from a spreadsheet and paste it into the text boxes below, in the
specified formats. Click on the link below to download a spreadsheet showing example data in the correct
format. Always include one header row with the correct column names.
Include one row per herd sampled per time period, with different columns for the different
surveillance components. The rows required and the header names are:
This data should have one row for every time period. The columns and headers are:
This data provides the combined test system protocol sensitivity for each of the surveillance
components. There should be one row per surveillance system component, and two columns:
About this site
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This site was created by Ausvet
with funding from a range of sources.It provides a range of epidemiological tools for the use of researchers and epidemiologists, particularly in animal health. Please send
any comments, questions or suggestions to Evan Sergeant
© 2018 Ausvet