Question 1 of 25 4.0 Points When assessing a positive relationship between alcohol consumption and oral cancer using a case-control study, increasing the sample size of the study will result in which of the following Reset Selection Question 2 of 25 4.0 Points The measure of the benefit to the population derived by modifying a risk factor is the: Reset Selection Question 3 of 25 4.0 Points An approach to estimating the effects due to the single exposure factor is to compute the: Reset Selection Question 4 of 25 4.0 Points A statistical association may be causal or noncausal. In addition, many diseases require that more than one factor be present for disease to develop. Examples of multiple causation models include: Reset Selection Question 5 of 25 4.0 Points You are investigating the role of physical activity in heart disease and suggest that physical activity protects against having a heart attack. While presenting these data to your colleagues, someone asks if you have thought about confounders such as factor X. This factor X could have confounded your interpretation of the data if it Reset Selection Question 6 of 25 4.0 Points The strategy which is not aimed at reducing selection bias is: Reset Selection Question 7 of 25 4.0 Points The purpose of a double-blind study is to Reset Selection Question 8 of 25 4.0 Points Which of the following is not a method for controlling the effects of confounding in epidemiologic studies Reset Selection Question 9 of 25 4.0 Points Surgeons at Hospital A report that the mortality rate at the end of a one-year follow-up after a new coronary bypass procedure is 15%. At Hospital B, the surgeons report a one-year mortality rate of 8% for the same procedure. Before concluding that the surgeons at Hospital B have vastly superior skill, which of the following possible confounders would you examine? Reset Selection Question 10 of 25 4.0 Points Sensitivity and specificity of a screening test refer to its: Reset Selection Question 11 of 25 4.0 Points Lead time bias is best described as: Reset Selection Question 12 of 25 4.0 Points The adverse consequences of using a screening test which has a low specificity include: Reset Selection Question 13 of 25 4.0 Points The degree of agreement between several trained experts refers to Reset Selection Question 14 of 25 4.0 Points A test that determines whether disease is actually present is a: Reset Selection Question 15 of 25 4.0 Points A person with an inapparent infection Reset Selection Question 16 of 25 4.0 Points The epidemiological triangle considers which factor(s) in the pathogenesis of disease: Reset Selection Question 17 of 25 4.0 Points The Centers for Disease Control and Prevention published an article concerning the high rate of foot fungal disease in New Orleans. The article explains that there has been a high rate of foot fungal disease in New Orleans for decades. Foot fungal disease in New Orle.

1. Question 1 of 25
4.0 Points
When assessing a positive relationship between alcohol
consumption and oral cancer using a case-control study,
increasing the sample size of the study will result in which of
the following
Reset Selection
Question 2 of 25
4.0 Points
The measure of the benefit to the population derived by
modifying a risk factor is the:
Reset Selection
Question 3 of 25
4.0 Points
An approach to estimating the effects due to the single exposure
factor is to compute the:
Reset Selection
Question 4 of 25
4.0 Points
A statistical association may be causal or noncausal. In
addition, many diseases require that more than one factor be
present for disease to develop. Examples of multiple causation
models include:

2. Reset Selection
Question 5 of 25
4.0 Points
You are investigating the role of physical activity in heart
disease and suggest that physical activity protects against
having a heart attack. While presenting these data to your
colleagues, someone asks if you have thought about
confounders such as factor X. This factor X could have
confounded your interpretation of the data if it
Reset Selection
Question 6 of 25
4.0 Points
The strategy which is not aimed at reducing selection bias is:
Reset Selection
Question 7 of 25
4.0 Points
The purpose of a double-blind study is to
Reset Selection
Question 8 of 25
4.0 Points

3. Which of the following is not a method for controlling the
effects of confounding in epidemiologic studies
Reset Selection
Question 9 of 25
4.0 Points
Surgeons at Hospital A report that the mortality rate at the end
of a one-year follow-up after a new coronary bypass procedure
is 15%. At Hospital B, the surgeons report a one-year mortality
rate of 8% for the same procedure. Before concluding that the
surgeons at Hospital B have vastly superior skill, which of the
following possible confounders would you examine?
Reset Selection
Question 10 of 25
4.0 Points
Sensitivity and specificity of a screening test refer to its:
Reset Selection
Question 11 of 25
4.0 Points
Lead time bias is best described as:

4. Reset Selection
Question 12 of 25
4.0 Points
The adverse consequences of using a screening test which has a
low specificity include:
Reset Selection
Question 13 of 25
4.0 Points
The degree of agreement between several trained experts refers
to
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Question 14 of 25
4.0 Points
A test that determines whether disease is actually present is a:
Reset Selection
Question 15 of 25
4.0 Points
A person with an inapparent infection

5. Reset Selection
Question 16 of 25
4.0 Points
The epidemiological triangle considers which factor(s) in the
pathogenesis of disease:
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Question 17 of 25
4.0 Points
The Centers for Disease Control and Prevention published an
article concerning the high rate of foot fungal disease in New
Orleans. The article explains that there has been a high rate of
foot fungal disease in New Orleans for decades. Foot fungal
disease in New Orleans is best described as
Reset Selection
Question 18 of 25
4.0 Points
An attack rate is an alternative incidence rate that is used when
Reset Selection
Question 19 of 25
4.0 Points
Host factors in the causation of disease include:

6. Reset Selection
Question 20 of 25
4.0 Points
An outbreak of salmonellosis occurred after an epidemiology
department luncheon, which was attended by 485 faculty and
staff. Assume everyone ate the same food items. Sixty-five
people had fever and diarrhea, five of these people were
severely affected. Subsequent laboratory tests on everyone who
attended the luncheon revealed an additional 72. The attack rate
of salmonellosis was:
Reset Selection
Question 21 of 25
4.0 Points
An outbreak of salmonellosis occurred after an epidemiology
department luncheon, which was attended by 485 faculty and
staff. Assume everyone ate the same food items. Sixty-five
people had fever and diarrhea, five of these people were
severely affected. Subsequent laboratory tests on everyone who
attended the luncheon revealed an additional 72 cases. The
virulence of salmonellosis was:
Reset Selection
Question 22 of 25
4.0 Points
Which of the following examples involves indirect transmission
of disease?

7. Reset Selection
Question 23 of 25
4.0 Points
The ability of an agent to cause disease in the infected host is
referred to as:
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Question 24 of 25
4.0 Points
Community A receives its water from several sources. The
water source responsible for causing an outbreak of disease X is
unknown. The best evidence to determine which suspected water
supply is responsible would be:
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Question 25 of 25
4.0 Points
The table below shows the mumps experience of children in 390
families exposed to mumps by a primary case within the family:
Population
Cases
Age in years
Total
No. susceptible before primary cases occurred
Primary

8. Secondary
2 − 4
300
250
100
50
5 − 9
450
420
204
87
10 − 19
152
84
25
15
The secondary attack rate among children aged
two to four years is:
Reset Selection