In this article we will discuss about:- 1. Selection of Cases and Controls 2. Comparability of Cases and Controls 3. Obtaining Information about Factor of Interest 4. Analysis of Case-Control Study. 1. Selection of Cases and Controls: In addition to being clear and concise, the criteria required to be a case should be highly specific in order to exclude false-positive [...]
In this article we will discuss about:- 1. Selection of Exposed and Unexposed Groups 2. Follow-Up Period in Cohort Disease 3. Determining Occurrence of Disease 4. Analysis. 1. Selection of Exposed and Unexposed Groups: In most cohort studies, special exposure groups are purposively selected for comparison. This could include comparing rates of disease(s) in different breeds; comparing rates of pneumonia [...]
In this article we will discuss about the study of animal diseases in regard to veterinary epidemiology. Principles of Surveys and Data Collection: All epidemiologic studies involve data collection, manipulation, and analysis. In general, the more organized these functions are, the easier the task will be. Also, appropriate data collection can improve the accuracy and precision of the data. The [...]