In the evolution of a new potentially pandemic strain of influenza A, the most significant ‘bottle-neck’ stage before a pandemic can develop is:
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British investigators conducted a study to compare measles-m…
British investigators conducted a study to compare measles-mumps-rubella (MMR) vaccine history among 1,294 children with pervasive development disorder (e.g., autism and Asperger’s syndrome) and 4,469 children without such disorders: They found no association. This is an example of which specific type of study?
Select the correct statement concerning the selection of con…
Select the correct statement concerning the selection of controls in a case-control study:
The main advantage of cost-utility analysis and the use of q…
The main advantage of cost-utility analysis and the use of quality adjusted life years or QALYs, as a type of health economic analysis is that:
Life-course Epidemiology is an approach that allows for:
Life-course Epidemiology is an approach that allows for:
“A cohort study differs from a case-control study in that:”…
“A cohort study differs from a case-control study in that:” Which of the following is NOT TRUE:
For the cruise ship scenario described in Question 9, how wo…
For the cruise ship scenario described in Question 9, how would you display the time course of the outbreak? (Choose one best answer)
A question which IS NOT RELEVANT in descriptive epidemiology…
A question which IS NOT RELEVANT in descriptive epidemiology is
The fraction 50 ⁄ 54 is a/an:
The fraction 50 ⁄ 54 is a/an:
In an evaluation of screening, specificity measures:
In an evaluation of screening, specificity measures: