Translations:Advanced Field Epi:Manual 1 - Disease Investigation/422/en

Where data can be structured into a binary coding for disease (disease present, disease absent) and where the risk factor under consideration can also be classified using a binary approach (absent or present), then counts of the number of animals in each of these combinations can be entered into a 2x2 table and analysed to produce either odds ratio or relative risk estimates and associated confidence intervals and p-values.