HSC 404 FINAL EXAM QUIZZES QUESTIONS AND ANSWERS
A cohort study was conducted to investigate the association between coffee consumption and anxiety in
a population based sample of adults. The population etiologic fraction is:
a=1,000
b=9,000
c=500
d=19,500 - CORRECT ANSWER✅✅50%
If it is accepted that an observed association is a causal one, an estimate of the impact that a successful
preventive program might have can be derived from: - CORRECT ANSWER✅✅Attributable Risk
The population etiologic fraction is a measure of the proportion of the disease rate in a population
attributable to the exposure of interest. The measure of effect is influenced by: - CORRECT
ANSWER✅✅The relative risk of the disease in exposed individuals versus unexposed individuals
An attributable-risk percent of 80% was calculated for the association between smoking and lung cancer
death. Which of the following provides the best interpretation of this statistic? - CORRECT
ANSWER✅✅of those dying of lung cancer who smoke, 80% of those deaths are attributed to their
smoking, assuming a causal association exists
Assuming that the sample table is for a cohort study, define the population risk difference of population
attributable risk: - CORRECT ANSWER✅✅(A+C/A+B+C+D) - (C/C+D)
A cohort study was conducted to investigate the association between coffee consumption and anxiety in
a population based sample of adults. The etiologic fraction is:
a=1,000
b=9,000
c=500
d=19,500 - CORRECT ANSWER✅✅75%
, A cohort study was conducted to investigate the association between coffee consumption and anxiety in
a population-based sample of adults. the RR of anxiety associated with coffee use is:
a=1,000
b=9,000
c=500
d=19,500 - CORRECT ANSWER✅✅4
Several studies have found that approximately 85% of cases of lung cancer are due to cigarette smoking.
this measure is an example of: - CORRECT ANSWER✅✅Attributable risk
A cohort study was conducted to investigate the association between coffee consumption and anxiety in
a population-based sample of adults.
the risk difference is:
a=1,000
b=9,000
c=500
d=19,500 - CORRECT ANSWER✅✅0.075
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?
- A lower p value
- A greater odds ratio
- A smaller 95% confidence interval
- A higher disease prevalence - CORRECT ANSWER✅✅None of the above
Recall bias is most likely to occur in: - CORRECT ANSWER✅✅Case control studies
An epidemiological experiment is performed in which one group is exposed to a suspected factor and
the other is not. All individuals with an odd hospital admission number are assigned to the second
group. The main purpose of this procedure is to: - CORRECT ANSWER✅✅improve the likelihood that
the two groups will be comparable with regard to known and unknown confounding factors
A cohort study was conducted to investigate the association between coffee consumption and anxiety in
a population based sample of adults. The population etiologic fraction is:
a=1,000
b=9,000
c=500
d=19,500 - CORRECT ANSWER✅✅50%
If it is accepted that an observed association is a causal one, an estimate of the impact that a successful
preventive program might have can be derived from: - CORRECT ANSWER✅✅Attributable Risk
The population etiologic fraction is a measure of the proportion of the disease rate in a population
attributable to the exposure of interest. The measure of effect is influenced by: - CORRECT
ANSWER✅✅The relative risk of the disease in exposed individuals versus unexposed individuals
An attributable-risk percent of 80% was calculated for the association between smoking and lung cancer
death. Which of the following provides the best interpretation of this statistic? - CORRECT
ANSWER✅✅of those dying of lung cancer who smoke, 80% of those deaths are attributed to their
smoking, assuming a causal association exists
Assuming that the sample table is for a cohort study, define the population risk difference of population
attributable risk: - CORRECT ANSWER✅✅(A+C/A+B+C+D) - (C/C+D)
A cohort study was conducted to investigate the association between coffee consumption and anxiety in
a population based sample of adults. The etiologic fraction is:
a=1,000
b=9,000
c=500
d=19,500 - CORRECT ANSWER✅✅75%
, A cohort study was conducted to investigate the association between coffee consumption and anxiety in
a population-based sample of adults. the RR of anxiety associated with coffee use is:
a=1,000
b=9,000
c=500
d=19,500 - CORRECT ANSWER✅✅4
Several studies have found that approximately 85% of cases of lung cancer are due to cigarette smoking.
this measure is an example of: - CORRECT ANSWER✅✅Attributable risk
A cohort study was conducted to investigate the association between coffee consumption and anxiety in
a population-based sample of adults.
the risk difference is:
a=1,000
b=9,000
c=500
d=19,500 - CORRECT ANSWER✅✅0.075
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?
- A lower p value
- A greater odds ratio
- A smaller 95% confidence interval
- A higher disease prevalence - CORRECT ANSWER✅✅None of the above
Recall bias is most likely to occur in: - CORRECT ANSWER✅✅Case control studies
An epidemiological experiment is performed in which one group is exposed to a suspected factor and
the other is not. All individuals with an odd hospital admission number are assigned to the second
group. The main purpose of this procedure is to: - CORRECT ANSWER✅✅improve the likelihood that
the two groups will be comparable with regard to known and unknown confounding factors
