[Answered]: Question One Briefly explain the THREE main aspects…

Question One Briefly explain the THREE main aspects of disease distribution. (3marks) Question Two Differentiate hypothesis testing in natural and experimental studies. (4marks) Question Three Briefly explain THREE types of health surveys conductal as a source of epidemiological data. (6marks) Question Four Explain at least TWO patterns of disease occurrence. (4marks) Question Five Define and diagrammatically illustrate the natural history of a communicable disease. (4marks) Question Six Explain the term herd immunity. (2marks) Question Seven Briefly explain the types of rates utilized in measurement of disease occurance. (6marks) Question Eight Differentiate between ODDs and ODDs ratios. (2marks) Question Nine Explain the difference between the two STEPS surveillance systems. (4marks) Question Ten Briefly explain FIVE aspects of a population status. (5marks) SECTION B Question Eleven Explain in detail SIX factors proposed for consideration when determining disease calesation. (30marks) Question Twelve Consider the following statistics to answer the questions Population 10,000 Prevalence 10% Sensitivity 90% Speutiary 95% a) Draw the 2×2 table (5marks) b) Calculate positive predictive value (5marks) c) Calculate negative predictive value (5marks) d) Give a detailed explanation regarding the validity of this screening test. (10marks) Question Thirteen Explain in detail SIX types of study designs.