NR 503 EXAM SCRIPT 2026 QUESTIONS WITH
ANSWERS GRADED A+
◉ A group of providers have implemented population-based intervention
and are now assessing the efficacy of the intervention. Which of the
following would be an example of a population based outcome? Answer:
Decreased mortality rate compared to previous year
◉ Appraisal of research publications is critical as providers assess for
relevance to population health. Which of the following items should be
considered during the appraisal process? Select all that apply. Answer:
Outcome measure, Transparency, Internal Validity
◉ What is being compared in a cohort study design? Answer: The
incidence of a disease between exposed and non-exposed individuals
◉ Analytic epidemiology is best described as:. Answer: Studies that
investigate origins and casuals' factors of health-related events
◉ You are part of a research group investigating association between
exposure and disease. Which study design is a best fit for this type of
study:. Answer: Case-Control Study
,◉ The provider is concerned about what appears to be an increase in the
mortality rate for their community. Mortality is an example of which of
the following:. Answer: Vital statistic
◉ An example of a tertiary prevention measure for chronic obstructive
pulmonary disease is:. Answer: Pulmonary Rehabilitation
◉ Which of the following statements best describe efficacy? Answer: It
is an estimate of the benefit of treatment under ideal conditions
It is an estimate of the reduction of disease in treated groups
◉ A study is conducted for a pharmaceutical agent that has shown
promise for reducing heart disease among women. In order to more fully
test the agent, an additional study is done restricting the participants to
be randomized to those who have a history of hypertension. Which of
the following advantages cannot be claimed by the researchers? Answer:
The generalizability of the study is increased
◉ What is the main advantage of the randomization of the 168 study
participants to one of the two drug treatment groups? Answer: Reduces
selection bias
◉ After entry into the study, patients were first classified into three
groups, those who had a previous AMI, those with a first AMI who were
at high risk for other cardiovascular diseases such as congestive heart
failure, and those with a first AMI who were at low risk for other
, cardiovascular diseases. Which term best describes the study design?
Answer: Randomized clinical trial with stratified randomization
◉ After assignment to treatment group, 77% of those in the placebo
group were men, while 80% of those in the drug X group were men.
Which statement is most likely to be true? Answer: Randomization was
successful since the investigators did not alter the selection of
participants in either group in order to ensure equal percentages of men
◉ A preliminary analysis was conducted after 6 months and found that
87% of participants in the placebo group and 85% of those in the drug X
group had taken more than 90% of their prescribed dosages. Which
statement best describes this finding? Answer: The characteristics of
patients who failed to comply with the treatment dosages should be
assessed as they may differ from those who complied
◉ Which of the following statements best describes the reason for
conducting the study as a double-blind trial? Answer: Double blinding
ensures that potential biases regarding selection, follow-up, and analysis
can be reduced
◉ The following data come from a study of approaches to smoking
cessation. Smokers who want to quit were randomized to one of four
groups: control ... brochures and a monthly phone call from a counselor.
Participants received mailed surveys at 8, 16, and 24 months after
randomization. The results after 2 years are in the table below. Which
ANSWERS GRADED A+
◉ A group of providers have implemented population-based intervention
and are now assessing the efficacy of the intervention. Which of the
following would be an example of a population based outcome? Answer:
Decreased mortality rate compared to previous year
◉ Appraisal of research publications is critical as providers assess for
relevance to population health. Which of the following items should be
considered during the appraisal process? Select all that apply. Answer:
Outcome measure, Transparency, Internal Validity
◉ What is being compared in a cohort study design? Answer: The
incidence of a disease between exposed and non-exposed individuals
◉ Analytic epidemiology is best described as:. Answer: Studies that
investigate origins and casuals' factors of health-related events
◉ You are part of a research group investigating association between
exposure and disease. Which study design is a best fit for this type of
study:. Answer: Case-Control Study
,◉ The provider is concerned about what appears to be an increase in the
mortality rate for their community. Mortality is an example of which of
the following:. Answer: Vital statistic
◉ An example of a tertiary prevention measure for chronic obstructive
pulmonary disease is:. Answer: Pulmonary Rehabilitation
◉ Which of the following statements best describe efficacy? Answer: It
is an estimate of the benefit of treatment under ideal conditions
It is an estimate of the reduction of disease in treated groups
◉ A study is conducted for a pharmaceutical agent that has shown
promise for reducing heart disease among women. In order to more fully
test the agent, an additional study is done restricting the participants to
be randomized to those who have a history of hypertension. Which of
the following advantages cannot be claimed by the researchers? Answer:
The generalizability of the study is increased
◉ What is the main advantage of the randomization of the 168 study
participants to one of the two drug treatment groups? Answer: Reduces
selection bias
◉ After entry into the study, patients were first classified into three
groups, those who had a previous AMI, those with a first AMI who were
at high risk for other cardiovascular diseases such as congestive heart
failure, and those with a first AMI who were at low risk for other
, cardiovascular diseases. Which term best describes the study design?
Answer: Randomized clinical trial with stratified randomization
◉ After assignment to treatment group, 77% of those in the placebo
group were men, while 80% of those in the drug X group were men.
Which statement is most likely to be true? Answer: Randomization was
successful since the investigators did not alter the selection of
participants in either group in order to ensure equal percentages of men
◉ A preliminary analysis was conducted after 6 months and found that
87% of participants in the placebo group and 85% of those in the drug X
group had taken more than 90% of their prescribed dosages. Which
statement best describes this finding? Answer: The characteristics of
patients who failed to comply with the treatment dosages should be
assessed as they may differ from those who complied
◉ Which of the following statements best describes the reason for
conducting the study as a double-blind trial? Answer: Double blinding
ensures that potential biases regarding selection, follow-up, and analysis
can be reduced
◉ The following data come from a study of approaches to smoking
cessation. Smokers who want to quit were randomized to one of four
groups: control ... brochures and a monthly phone call from a counselor.
Participants received mailed surveys at 8, 16, and 24 months after
randomization. The results after 2 years are in the table below. Which
