Reference no: EM133393421

Question 1.

A disadvantage of case-control studies is that they are expensive, since they study the sample over a long period of time.

a True

b False

Question 2

The randomized clinical trial is the "gold standard" of research studies, even though sample dropout, refusals to participate, and contaminated treatments can play a role in study results.

a True

b False

Question 3

Characteristics of a cohort study include all of the following except:

a Prospective study to follow a sample over a period of time

b Retrospective study to a sample's history

c Inexpensive since they require a very short period of time to conduct and complete the study

d All of the above

e First and second only

Question 4

Confounding variables are relevant characteristics not included in a research study that may directly affect the results and might therefore interfere with credibility.

a True

b False

Question 5

Research studies are not perfect and flaws can exist due to bias. Types of bias that might occur in case-control studies include:

a Recall bias

b Selection bias

c Misclassification bias

d All of the above

e First and second only