Epidemiology

QUESTION 1

1. Information bias occurs when the reporting of the disease is affected by perceived or actual exposure or, the reporting of exposure is affected by perceived or actual disease

 True

 False

QUESTION 2

1. How we select our sample affects:

		random error
		systematic error
		bias
		all of the above

QUESTION 3

1. Which of the following items is type of information bias?

		Recall bias
		Interview Bias
		Diagnostic Bias
		All of above

QUESTION 4

1. Diagnostic bias occurs when the practitioner’s knowledge of exposure status influences the diagnosis of disease status.

 True

 False

QUESTION 5

1. When studying the same E and D within the same population, random error would likely yield different results each time we repeated study.

 True

 False

QUESTION 6

1. Interviewer bias can occur when the interviewer knows the status (E+/E- or D+/D-) and doesn’t give as much attention to controls.

 True

 False

QUESTION 7

1. When studying the same E and D within the same population, random error would likely yield different results each time we repeated study.

 True

 False

QUESTION 8

1. When sample size is large, RR estimates are subject to a great deal of random error.

 True

 False

QUESTION 9

1. Bias is random error that is a result of a flaw in the study’s design or execution.

 True

 False

QUESTION 10

1. Explain the relationship between precision and sample size.  Why is this important?

QUESTION 11

1. Compare and contrast random and systematic error.  Be specific and thorough, please.

QUESTION 12

1. Are clinical trials epi?  Explain your answer.

QUESTION 13

1. In your own words, explain each of the following descriptive studies: case report; case series; cross-sectional study; ecological study; and time-series study.