Chapter 8 Quiz: NGR7673_CMB-21Fall 00300
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Princeton University *
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Date
Jan 9, 2024
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6
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9/1/21, 5
:
05 PM
Chapter 8 Quiz: NGR7673_CMB-21Fall 00300
Page 1 of 6
https://webcourses.ucf.edu/courses/1391482/quizzes/2164152
Chapter 8 Quiz
Due
Oct 10 at 11:59pm
Points
10
Questions
10
Time Limit
None
Allowed Attempts
2
Instructions
Attempt History
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Attempt 1
22 minutes
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1 / 1 pts
Question 1
9/1/21, 5
:
05 PM
Chapter 8 Quiz: NGR7673_CMB-21Fall 00300
Page 2 of 6
https://webcourses.ucf.edu/courses/1391482/quizzes/2164152
Exposures in which type of cohort do not change over time and are
followed from a defined starting point to a defined ending point but may
suffer from losses to follow-up?
Open cohort
Fixed cohort
Closed cohort
Dynamic cohort
1 / 1 pts
Question 2
Which of the following is the appropriate measure of disease frequency
in a fixed cohort when the population experiences losses to follow-up?
Incidence rates
Prevalence rates
Mortality rates
Cumulative incidence rates
1 / 1 pts
Question 3
9/1/21, 5
:
05 PM
Chapter 8 Quiz: NGR7673_CMB-21Fall 00300
Page 3 of 6
https://webcourses.ucf.edu/courses/1391482/quizzes/2164152
Which of the following is assembled to study the health effects of rare
exposures, such as uncommon occupational chemicals?
Open cohort
Fixed cohort
Special cohort
General cohort
1 / 1 pts
Question 4
Which of the following is often selected from professional groups such
as doctors and nurses, volunteers, or residents in well-defined
geographic areas to facilitate follow-up and accurate ascertainment of
the outcomes under study?
Open cohort
Fixed cohort
Special cohort
General cohort
1 / 1 pts
Question 5
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9/1/21, 5
:
05 PM
Chapter 8 Quiz: NGR7673_CMB-21Fall 00300
Page 4 of 6
https://webcourses.ucf.edu/courses/1391482/quizzes/2164152
Which type of comparison group is commonly used in occupational
studies of mortality because these data are quite accessible to
researchers?
General population
Internal comparison group
External comparison group
Comparison cohort
0 / 1 pts
Question 6
Incorrect
Incorrect
Epidemiologists have found that which type of comparison group is the
best type of comparison group to use in a cohort study?
General population
Internal comparison group
External comparison group
Comparison cohort
0 / 1 pts
Question 7
Incorrect
Incorrect
9/1/21, 5
:
05 PM
Chapter 8 Quiz: NGR7673_CMB-21Fall 00300
Page 5 of 6
https://webcourses.ucf.edu/courses/1391482/quizzes/2164152
If lost individuals are more or less likely to be exposed than those
successfully traced, the study results may suffer from which of the
following?
Confounding
Selection bias
Counterfactual ideal
Information bias
1 / 1 pts
Question 8
True or False? Observational studies are considered "natural"
experiments because the investigator acts as a disinterested observer,
merely letting nature take its course.
True
False
0 / 1 pts
Question 9
Incorrect
Incorrect
True or False? The timing of prospective cohort studies is similar to that
of experimental studies?
9/1/21, 5
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05 PM
Chapter 8 Quiz: NGR7673_CMB-21Fall 00300
Page 6 of 6
https://webcourses.ucf.edu/courses/1391482/quizzes/2164152
True
False
1 / 1 pts
Question 10
True or False? Investigators in a retrospective cohort study can usually
obtain more detailed information on exposures and other key variables
because they have more control of the data collection process and can
gather information directly from the participants.
True
False
Quiz Score:
7
out of 10
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