Translations:Advanced Field Epi:Manual 2 - Diagnostic Tests/198/en
Figure 4.: Effect of sample size on the probability that a group of test-negative animals will include one or more infected (but test-negative) animals, and the probability that this will occur, for an assumed Se=0.9, Sp-0.99 and true prevalence=0.05 (5%) in the herd/flock of origin.