Tools
Sample size
Sample size to estimate a single mean
Representative freedom surveys
Population sensitivity for fixed unit sensitivity
Sample size for target confidence of freedom
Sample size for freedom with pooled testing
FreeCalc sample size for freedom with imperfect tests
Diagnostic tests
Probability of infection in a test-negative sample
Compare two tests
Testing in parallel or series
Positive and Negative Predictive Values
Probability of false positives
Likelihood ratios and probability of infection
Test evaluation against a gold standard
ROC analysis
Analyse test repeatability
Freedom surveys
Representative sampling
1-Stage sampling
Sample size
Perfect unit specificity
Sample size for freedom with fixed unit sensitivity
Sample size for target confidence of freedom
Imperfect unit specificity
FreeCalc sample size for freedom with imperfect tests
Population sensitivity
Perfect unit specificity
Population sensitivity with varying unit sensitivity
Population sensitivity for fixed unit sensitivity
Imperfect unit specificity
Population sensitivity with imperfect sensitivity and specificity
Freecalc population sensitivity with imperfect sensitivity and specificity
Design prevalence for target population sensitivity
Pooled sampling
Population sensitivity with pooled testing
Sample size for freedom with pooled testing
2-Stage sampling
Sample size
Sample size for 2-stage freedom survey with fixed cluster-sensitivity
Least cost sample size with unknown cluster sizes
Least-cost sample size with sampling frame of cluster sizes
Population sensitivity
2-Stage Freedom Analysis
Risk-based sampling
Probability of freedom
Confidence of freedom for a single sampling
Confidence of freedom for multiple samplings
Random sampling
Random sampling from a sampling frame
Random Geographic co-ordinates
Random sampling units in a clustered population
Test Tool
Prevalence surveys
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