Efficient Sample Size Calculator
This model estimates the sample size needed to declare a population free from disesae, explicitly accounting for biological clusterings within the overall population. Users can select simple random sampling, high-harvest, or two-stage cluster sampling schemes.
Geographical Scale
- Biological population of interest (N)
Required Data
- None
Suggested Data
- None
User Inputs
- Total population size estimate
- Average cluster size
- Whether cluster sizes are fixed or random
- Correlation of disease status within cluster
- Diagnostic test sensitivity
Outputs
- The number of animals that need to be tested to have high probability (95%) that disease prevalence in the overall population is at or below 1% or 2%.
