Epidemiology

Describe the difference between sensitivity and specificity. Then describe two different types of immunologic or molecular tests that differ in their sensitivity and specificity. What role do each of these tests play in detecting disease? Are they confirmatory or screening? Why 2.Please provide two reasons why an epidemiologist would want to evaluate the age adjusted rate. Please provide disease specific and population specific examples. 3.Different measures of disease are useful to evaluate and assess public health programs and needs in different situations. For each of the following questions, (a) state which measure would best support your goal and (b) explain why you chose that measure. To demonstrate the risks of car-train crashes at railroad crossings without warning signals. 4.You have just finished administering a food/drink questionnaire to ill and non-ill participants in a Minnesota summer picnic party. The ill individuals developed moderate to severe diarrhea 16 to 46 hours after the picnic. Six persons experienced vomiting. The following data were collected:      

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