Translations:Advanced Field Epi:Manual 2 - Diagnostic Tests/160/en
Where Se and Sp are animal-level sensitivity and specificity respectively, Prev is true disease prevalence and m is the number of animals tested. SeH is equivalent to the level of confidence of detecting infection in herds or flocks with the specified prevalence of infection. SeH and SpH can be easily calculated using EpiTools or other epidemiological calculators.