NR 503 Midterm Week 4 Exam g g g
(Complete solutions and resources for the course exam) g g g g g g g
Question 1 g
Which of the following statements best describe efficacy?
g g g g g g g
• It is an estimate of the benefit of treatment under ideal
g g g g g g g g g g
• gconditions It is an estimate of the reduction of disease in treated
g g g g g g g g g g g
ggroups
Question 2 g
A study is conducted for a pharmaceutical agent that has shown promise for reducing
g g g g g g g g g g g g g
heart disease among women. In order to more fully test the agent, an additional study is
g g g g g g g g g g g g g g g g
done restricting the participants to be r&omized to those who have a history of
g g g g g g g g g g g g g g
hypertension. Which of the following advantages cannot be claimed by the researchers?
g g g g g g g g g g g g
The generalizability of the study is increased
g g g g g g
Question 3 g
What is the main advantage of the r&omization of the 168 study participants to one of the tw
g g g g g g g g g g g g g g g g g
drug treatment groups?
g g g
Reduces the potential for selection bias in allocation of treatment group
g g g g g g g g g g
Question 4 g
After entry into the study, patients were first classified into three groups, those who had a
g g g g g g g g g g g g g g g
previous AMI, those with a first AMI who were at high risk for other cardiovascular
g g g g g g g g g g g g g g g
diseases such as congestive heart failure, & those with a first AMI who were at low risk
g g g g g g g g g g g g g g g g g
for other cardiovascular diseases. Which term best describes the study design?
g g g g g g g g g g g
R&omized clinical trial with stratified r&omization
g g g g g
Question 5 g
After assignment to treatment group, 77% of those in the placebo group were men,
g g g g g g g g g g g g g
while 80% of those in the drug X group were men. Which statement is most likely to be
g g g g g g g g g g g g g g g g g g
true?
g
, • R&omization was successful since the investigators did not alter the selection of g g g g g g g g g g g
g participants in either group in order to ensure equal percentages of men
g g g g g g g g g g g
Question 6 g
A preliminary analysis was conducted after 6 months & found that 87% of participants in
g g g g g g g g g g g g g g
the placebo group & 85% of those in the drug X group had taken more than 90% of
g g g g g g g g g g g g g g g g g g
their prescribed dosages.
g g g
Which statement best describes this finding?
g g g g g
The characteristics of patients who failed to comply with the treatment dosages should be assessed as they m
g g g g g g g g g g g g g g g g g
Question 7 g
Which of the following statements best describes the reason for conducting the study as
g g g g g g g g g g g g g
a double- blind trial?
g g g g
Double blinding ensures that potential biases regarding selection, follow-up, & analysis can be reduced
g g g g g g g g g g g g g
Question 8 g
A multicenter double-blind r&omized study was carried out to compare the effect of drug X
g g g g g g g g g g g g g g
with that of a placebo in patients surviving acute myocardial infarction (AMI). Treatment
g g g g g g g g g g g g g
with the drug started 7 days after infarction in 1,884 patients, 52% of all persons who
g g g g g g g g g g g g g g g g
were evaluated for entry into the study. 945 participants were r&omized to treatment
g g g g g g g g g g g g g
with drug X while 939 were assigned to the placebo group. Patients were then followed
g g g g g g g g g g g g g g g
for 12 months for reinfarction. There were 152 deaths in the placebo group & 98 in the
g g g g g g g g g g g g g g g g g
group receiving drug X.
g g g g
The researchers conclude that treatment with drug X reduces mortality in patients who
g g g g g g g g g g g g
have had an AMI. The researchers are:
g g g g g g g
Correct because the rate of death is decreased in the drug X group
g g g g g g g g g g g g
Question 9 g
The following data come from a study of approaches to smoking cessation. Smokers who
g g g g g g g g g g g g g
want to quit were r&omized to one of four groups: control group C who received no
g g g g g g g g g g g g g g g g
intervention assistance, quitting guide group Q who received brochures about how to
g g g g g g g g g g g g
quit smoking, quitting guide & support group QS who received quitting brochures as well
g g g g g g g g g g g g g g
as social support brochures listing benefits of smoking cessation, & telephone support
g g g g g g g g g g g g
group T who received the brochures & a monthly phone call from a counselor.
g g g g g g g g g g g g g g
Participants received mailed surveys at 8, 16, & 24 months after r&omization. The results
g g g g g g g g g g g g g g
after 2 years are in the table below. Which group had the least success in terms of
g g g g g g g g g g g g g g g g g
quitting smoking?
g g
, Group QS g
Question 10 g
The following data come from a study of approaches to smoking cessation. Smokers who
g g g g g g g g g g g g g
want to quit were r&omized to one of four groups: control group C who received no
g g g g g g g g g g g g g g g g
intervention assistance, quitting guide group Q who received brochures about how to
g g g g g g g g g g g g
quit smoking, quitting guide & support group QS who received quitting brochures as well
g g g g g g g g g g g g g g
as social support brochures listing benefits of smoking cessation, & telephone support
g g g g g g g g g g g g
group T who received the brochures & a monthly phone call from a counselor.
g g g g g g g g g g g g g g
Participants received mailed surveys at 8, 16, & 24 months after r&omization. The results
g g g g g g g g g g g g g g
after 2 years are in the table below. What is the main purpose of r&omization in this
g g g g g g g g g g g g g g g g g
study?
g
To avoid assigning more persons who have tried & failed to quit in the past to the control group
g g g g g g g g g g g g g g g g g g
Useful Links for Detail Solution: g g g g
Useful Links: g
(Chamberlain College of Nursing) g g g
Search the required document link, use it to get the answer
g g g g g g g g g g
documents and secure HIGHSCORE
g g g g
Visit the bundle link to get the documents
g g g g g g g
NR503
Final Exam, Study Guide, NR503: Student Consult Questions and
g g g g g g g g
Answers, NR 503: Population Health, Epidemiology & Statistical
g g g g g g g g
Principles, Chamberlain. g g
https://www.stuvia.com/bundle/166864/nr503-final-exam-study-guide-nr503-student-consult-questions-and-answers-
nr-503-population-health-epidemiology-en-statistical-principles-chamberlain.
g
NR503
(Complete solutions and resources for the course exam) g g g g g g g
Question 1 g
Which of the following statements best describe efficacy?
g g g g g g g
• It is an estimate of the benefit of treatment under ideal
g g g g g g g g g g
• gconditions It is an estimate of the reduction of disease in treated
g g g g g g g g g g g
ggroups
Question 2 g
A study is conducted for a pharmaceutical agent that has shown promise for reducing
g g g g g g g g g g g g g
heart disease among women. In order to more fully test the agent, an additional study is
g g g g g g g g g g g g g g g g
done restricting the participants to be r&omized to those who have a history of
g g g g g g g g g g g g g g
hypertension. Which of the following advantages cannot be claimed by the researchers?
g g g g g g g g g g g g
The generalizability of the study is increased
g g g g g g
Question 3 g
What is the main advantage of the r&omization of the 168 study participants to one of the tw
g g g g g g g g g g g g g g g g g
drug treatment groups?
g g g
Reduces the potential for selection bias in allocation of treatment group
g g g g g g g g g g
Question 4 g
After entry into the study, patients were first classified into three groups, those who had a
g g g g g g g g g g g g g g g
previous AMI, those with a first AMI who were at high risk for other cardiovascular
g g g g g g g g g g g g g g g
diseases such as congestive heart failure, & those with a first AMI who were at low risk
g g g g g g g g g g g g g g g g g
for other cardiovascular diseases. Which term best describes the study design?
g g g g g g g g g g g
R&omized clinical trial with stratified r&omization
g g g g g
Question 5 g
After assignment to treatment group, 77% of those in the placebo group were men,
g g g g g g g g g g g g g
while 80% of those in the drug X group were men. Which statement is most likely to be
g g g g g g g g g g g g g g g g g g
true?
g
, • R&omization was successful since the investigators did not alter the selection of g g g g g g g g g g g
g participants in either group in order to ensure equal percentages of men
g g g g g g g g g g g
Question 6 g
A preliminary analysis was conducted after 6 months & found that 87% of participants in
g g g g g g g g g g g g g g
the placebo group & 85% of those in the drug X group had taken more than 90% of
g g g g g g g g g g g g g g g g g g
their prescribed dosages.
g g g
Which statement best describes this finding?
g g g g g
The characteristics of patients who failed to comply with the treatment dosages should be assessed as they m
g g g g g g g g g g g g g g g g g
Question 7 g
Which of the following statements best describes the reason for conducting the study as
g g g g g g g g g g g g g
a double- blind trial?
g g g g
Double blinding ensures that potential biases regarding selection, follow-up, & analysis can be reduced
g g g g g g g g g g g g g
Question 8 g
A multicenter double-blind r&omized study was carried out to compare the effect of drug X
g g g g g g g g g g g g g g
with that of a placebo in patients surviving acute myocardial infarction (AMI). Treatment
g g g g g g g g g g g g g
with the drug started 7 days after infarction in 1,884 patients, 52% of all persons who
g g g g g g g g g g g g g g g g
were evaluated for entry into the study. 945 participants were r&omized to treatment
g g g g g g g g g g g g g
with drug X while 939 were assigned to the placebo group. Patients were then followed
g g g g g g g g g g g g g g g
for 12 months for reinfarction. There were 152 deaths in the placebo group & 98 in the
g g g g g g g g g g g g g g g g g
group receiving drug X.
g g g g
The researchers conclude that treatment with drug X reduces mortality in patients who
g g g g g g g g g g g g
have had an AMI. The researchers are:
g g g g g g g
Correct because the rate of death is decreased in the drug X group
g g g g g g g g g g g g
Question 9 g
The following data come from a study of approaches to smoking cessation. Smokers who
g g g g g g g g g g g g g
want to quit were r&omized to one of four groups: control group C who received no
g g g g g g g g g g g g g g g g
intervention assistance, quitting guide group Q who received brochures about how to
g g g g g g g g g g g g
quit smoking, quitting guide & support group QS who received quitting brochures as well
g g g g g g g g g g g g g g
as social support brochures listing benefits of smoking cessation, & telephone support
g g g g g g g g g g g g
group T who received the brochures & a monthly phone call from a counselor.
g g g g g g g g g g g g g g
Participants received mailed surveys at 8, 16, & 24 months after r&omization. The results
g g g g g g g g g g g g g g
after 2 years are in the table below. Which group had the least success in terms of
g g g g g g g g g g g g g g g g g
quitting smoking?
g g
, Group QS g
Question 10 g
The following data come from a study of approaches to smoking cessation. Smokers who
g g g g g g g g g g g g g
want to quit were r&omized to one of four groups: control group C who received no
g g g g g g g g g g g g g g g g
intervention assistance, quitting guide group Q who received brochures about how to
g g g g g g g g g g g g
quit smoking, quitting guide & support group QS who received quitting brochures as well
g g g g g g g g g g g g g g
as social support brochures listing benefits of smoking cessation, & telephone support
g g g g g g g g g g g g
group T who received the brochures & a monthly phone call from a counselor.
g g g g g g g g g g g g g g
Participants received mailed surveys at 8, 16, & 24 months after r&omization. The results
g g g g g g g g g g g g g g
after 2 years are in the table below. What is the main purpose of r&omization in this
g g g g g g g g g g g g g g g g g
study?
g
To avoid assigning more persons who have tried & failed to quit in the past to the control group
g g g g g g g g g g g g g g g g g g
Useful Links for Detail Solution: g g g g
Useful Links: g
(Chamberlain College of Nursing) g g g
Search the required document link, use it to get the answer
g g g g g g g g g g
documents and secure HIGHSCORE
g g g g
Visit the bundle link to get the documents
g g g g g g g
NR503
Final Exam, Study Guide, NR503: Student Consult Questions and
g g g g g g g g
Answers, NR 503: Population Health, Epidemiology & Statistical
g g g g g g g g
Principles, Chamberlain. g g
https://www.stuvia.com/bundle/166864/nr503-final-exam-study-guide-nr503-student-consult-questions-and-answers-
nr-503-population-health-epidemiology-en-statistical-principles-chamberlain.
g
NR503
