George Washington University MPH 6003 Quiz 5 1)Lead time bias will make it appear that the apparent survival time in the non-screened population to be than the survival time in a similar screened population

Health Science Apr 23, 2021

George Washington University

MPH 6003

Quiz 5

1)Lead time bias will make it appear that the apparent survival time in the non-screened population to be than the survival time in a similar screened population.

Select one:

2. If the researchers used a cutoff of >5 items checked on the QuickieTest as a positive test for mild dementia what would be the sensitivity of the test?

Select one:

3. If the researchers used a cutoff of >5 items checked on the QuickieTest as a positive result for mild dementia what would be the specificity of the test?

Select one:

4. If you were to compare the PPV of this test in the study population of unusually healthy older subjects (low risk for dementia) to another population in which mild dementia was much more common

Select one:

5. What is the relationship of the Human Immunodeficiency virus to AIDS?

6. Ionizing radiation, benzene, and certain viruses can each individually cause leukemia without the other two exposures, but only if the exposed individual has a certain genetic deficiency. This genetic deficiency by itself does not cause leukemia, but the disease never occurs in the absence of this genetic factor. The genetic deficiency is:

Select one:

7. When considering if an association is causal, refuting this criteria will immediately prove it was NOT causal:

8. A cross sectional study showed that people reporting a high fat intake were 10 times more likely to be depressed. Considering ONLY this study, what criteria for a causal relationship between fat intake and depression is met?

9. Most diseases have a single cause.

10. A true causal factor may increase or decrease the chance of disease.

11. When there is no association there is no causation.

12. When there is an association there must be causation.

Expert Solution

PFA

Download Solution Attachment (PDF/Doc)

Archived Solution

Unlocked Solution

You have full access to this solution. To save a copy with all formatting and attachments, use the button below.

Already a member? Sign In

Important Note: This solution is from our archive and has been purchased by others. Submitting it as-is may trigger plagiarism detection. Use it for reference only.

For ready-to-submit work, please order a fresh solution below.

Or get 100% fresh solution

Get Custom Quote