Chamberlain NR449 Evidence-
Based Practice Final Exam
Questions and Well Graded
Solutions with Rationales Updated
2026-2027
Master the Chamberlain University NR449 Evidence-Based Practice Exam with this
comprehensive study bundle. This premium guide features actual quiz solutions,
practice milestones, and explicit rationales for the Final Exam and CJE Benchmark.
Designed for top nursing programs including Grand Canyon University, UT Arlington,
Walden University, Capella University, and Nova South-eastern. Optimize your review
of PICOT, qualitative designs, and research ethics to secure an A+ on your nursing
exam.
1|Page
,Question 1: Which part of the PICO(T) framework is represented by the phrase
"adult patients undergoing abdominal surgery" in a clinical question?
A) Intervention
B) Outcome
C) Population
D) Comparison
Correct Answer: C) Population
Rationale: The "P" in PICO(T) stands for Population, Patient, or Problem. It defines
the specific group or clinical demographic being examined.
Question 2: In a study investigating whether warm compresses reduce peripheral IV
infiltration compared to cold compresses, what is the comparison component?
A) Warm compresses
B) Cold compresses
C) Peripheral IV infiltration
D) Adult patients
Correct Answer: B) Cold compresses
Rationale: The "C" represents the Comparison group, which serves as the
alternative treatment or standard of care being compared against the new
intervention.
Question 3: A nurse reads a research question that evaluates the rate of pressure
injury development over a six-month hospital stay. What PICO(T) element does the
six-month period represent?
A) Population
B) Intervention
C) Outcome
D) Time
Correct Answer: D) Time
Rationale: The "T" represents the Timeframe or duration during which the
intervention is implemented and the outcome is measured.
Question 4: Which of the following is considered a well-formulated, measurable
clinical outcome in a PICO(T) question?
A) Improved nursing satisfaction scores
B) Decreased length of ICU stay by 24 hours
C) Enhanced patient wellness
D) Better adherence to hospital policies
Correct Answer: B) Decreased length of ICU stay by 24 hours
Rationale: Outcomes must be clearly defined, objective, and quantifiable to measure
whether an evidence-based change is effective.
Question 5: Why is the comparison (C) component sometimes omitted in a PICO(T)
question?
A) Because interventions do not always require an alternative comparison group
B) Because outcomes are more important than comparisons
C) Because it is impossible to compare clinical interventions
D) Because populations are always homogeneous
Correct Answer: A) Because interventions do not always require an alternative
comparison group
2|Page
,Rationale: While ideal, a specific alternative comparison is not mandatory if the
intervention is being evaluated against general standard practice or no intervention.
Question 6: Which element of the PICO(T) question "In elderly patients, does the use
of a bed alarm reduce the number of falls compared to standard hourly rounding?"
represents the intervention?
A) Elderly patients
B) Bed alarm
C) Number of falls
D) Standard hourly rounding
Correct Answer: B) Bed alarm
Rationale: The "I" represents the specific intervention, therapy, or independent
variable being introduced to alter an outcome.
Question 7: What is the primary purpose of utilizing the PICO(T) format in evidence-
based practice?
A) To find a quick answer to a complex medical billing issue
B) To provide a structured framework for searching electronic databases efficiently
C) To eliminate the need for an institutional review board approval
D) To format the final references page of a nursing research paper
Correct Answer: B) To provide a structured framework for searching electronic
databases efficiently
Rationale: PICO(T) helps break down clinical scenarios into distinct searchable
terms, narrowing database results to highly relevant evidence.
Question 8: A nurse frames a question about whether music therapy reduces anxiety
scores during dressing changes. In this scenario, "anxiety scores" represents which
PICO(T) element?
A) Population
B) Intervention
C) Comparison
D) Outcome
Correct Answer: D) Outcome
Rationale: The "O" represents the Outcome, which is the measurable effect,
consequence, or response to the intervention.
Question 9: Which PICO(T) component helps narrow down studies to a specific age
category, such as neonates or geriatrics?
A) Time
B) Intervention
C) Population
D) Outcome
Correct Answer: C) Population
Rationale: Specifying demographic characteristics like age or gender within the
Population parameter refines the relevance of retrieved literature.
Question 10: In a PICO(T) question regarding the effectiveness of chlorhexidine
versus soap and water for central line care, "soap and water" is the:
A) Intervention
B) Comparison
C) Outcome
D) Timeline
3|Page
, Correct Answer: B) Comparison
Rationale: Soap and water represents the traditional standard practice being
compared directly to the new intervention (chlorhexidine).
Question 11: Which question format is best suited for an EBP project designed to
resolve a clinical unit dilemma?
A) Descriptive qualitative question
B) PICO(T) formatted question
C) Financial cost-benefit question
D) Medical diagnosis question
Correct Answer: B) PICO(T) formatted question
Rationale: The PICO(T) format is the gold standard for clinical nursing EBP projects
as it aligns clinical practice issues with searchable research metrics.
Question 12: Identify the missing PICO(T) element in this question: "Do compression
stockings reduce the risk of deep vein thrombosis in post-operative knee
replacement patients?"
A) Population
B) Intervention
C) Comparison
D) Outcome
Correct Answer: C) Comparison
Rationale: The question lacks a explicit comparison group (e.g., compared to
sequential compression devices or no stockings).
Question 13: What does the "I" stand for in a PICO(T) question aimed at preventing
a specific condition?
A) Identification
B) Investigation
C) Intervention
D) Institution
Correct Answer: C) Intervention
Rationale: The "I" always stands for the Intervention, treatment, or clinical action
under review.
Question 14: Which of the following represents a "T" component in an EBP
question?
A) During the immediate post-operative period
B) Within a suburban clinic setting
C) Treated with oral antibiotics
D) Total knee arthroplasty patients
Correct Answer: A) During the immediate post-operative period
Rationale: "Immediate post-operative period" establishes a temporal boundary or
timeframe for observing the clinical outcome.
Question 15: Why is a precise definition of the Population (P) critical when writing a
clinical question?
A) It determines the statistical software to be used
B) It ensures that the literature found is directly applicable to the nurse's actual
clinical subset
C) It serves as a replacement for the research hypothesis
D) It dictates the salary requirements of the nursing research team
4|Page
Based Practice Final Exam
Questions and Well Graded
Solutions with Rationales Updated
2026-2027
Master the Chamberlain University NR449 Evidence-Based Practice Exam with this
comprehensive study bundle. This premium guide features actual quiz solutions,
practice milestones, and explicit rationales for the Final Exam and CJE Benchmark.
Designed for top nursing programs including Grand Canyon University, UT Arlington,
Walden University, Capella University, and Nova South-eastern. Optimize your review
of PICOT, qualitative designs, and research ethics to secure an A+ on your nursing
exam.
1|Page
,Question 1: Which part of the PICO(T) framework is represented by the phrase
"adult patients undergoing abdominal surgery" in a clinical question?
A) Intervention
B) Outcome
C) Population
D) Comparison
Correct Answer: C) Population
Rationale: The "P" in PICO(T) stands for Population, Patient, or Problem. It defines
the specific group or clinical demographic being examined.
Question 2: In a study investigating whether warm compresses reduce peripheral IV
infiltration compared to cold compresses, what is the comparison component?
A) Warm compresses
B) Cold compresses
C) Peripheral IV infiltration
D) Adult patients
Correct Answer: B) Cold compresses
Rationale: The "C" represents the Comparison group, which serves as the
alternative treatment or standard of care being compared against the new
intervention.
Question 3: A nurse reads a research question that evaluates the rate of pressure
injury development over a six-month hospital stay. What PICO(T) element does the
six-month period represent?
A) Population
B) Intervention
C) Outcome
D) Time
Correct Answer: D) Time
Rationale: The "T" represents the Timeframe or duration during which the
intervention is implemented and the outcome is measured.
Question 4: Which of the following is considered a well-formulated, measurable
clinical outcome in a PICO(T) question?
A) Improved nursing satisfaction scores
B) Decreased length of ICU stay by 24 hours
C) Enhanced patient wellness
D) Better adherence to hospital policies
Correct Answer: B) Decreased length of ICU stay by 24 hours
Rationale: Outcomes must be clearly defined, objective, and quantifiable to measure
whether an evidence-based change is effective.
Question 5: Why is the comparison (C) component sometimes omitted in a PICO(T)
question?
A) Because interventions do not always require an alternative comparison group
B) Because outcomes are more important than comparisons
C) Because it is impossible to compare clinical interventions
D) Because populations are always homogeneous
Correct Answer: A) Because interventions do not always require an alternative
comparison group
2|Page
,Rationale: While ideal, a specific alternative comparison is not mandatory if the
intervention is being evaluated against general standard practice or no intervention.
Question 6: Which element of the PICO(T) question "In elderly patients, does the use
of a bed alarm reduce the number of falls compared to standard hourly rounding?"
represents the intervention?
A) Elderly patients
B) Bed alarm
C) Number of falls
D) Standard hourly rounding
Correct Answer: B) Bed alarm
Rationale: The "I" represents the specific intervention, therapy, or independent
variable being introduced to alter an outcome.
Question 7: What is the primary purpose of utilizing the PICO(T) format in evidence-
based practice?
A) To find a quick answer to a complex medical billing issue
B) To provide a structured framework for searching electronic databases efficiently
C) To eliminate the need for an institutional review board approval
D) To format the final references page of a nursing research paper
Correct Answer: B) To provide a structured framework for searching electronic
databases efficiently
Rationale: PICO(T) helps break down clinical scenarios into distinct searchable
terms, narrowing database results to highly relevant evidence.
Question 8: A nurse frames a question about whether music therapy reduces anxiety
scores during dressing changes. In this scenario, "anxiety scores" represents which
PICO(T) element?
A) Population
B) Intervention
C) Comparison
D) Outcome
Correct Answer: D) Outcome
Rationale: The "O" represents the Outcome, which is the measurable effect,
consequence, or response to the intervention.
Question 9: Which PICO(T) component helps narrow down studies to a specific age
category, such as neonates or geriatrics?
A) Time
B) Intervention
C) Population
D) Outcome
Correct Answer: C) Population
Rationale: Specifying demographic characteristics like age or gender within the
Population parameter refines the relevance of retrieved literature.
Question 10: In a PICO(T) question regarding the effectiveness of chlorhexidine
versus soap and water for central line care, "soap and water" is the:
A) Intervention
B) Comparison
C) Outcome
D) Timeline
3|Page
, Correct Answer: B) Comparison
Rationale: Soap and water represents the traditional standard practice being
compared directly to the new intervention (chlorhexidine).
Question 11: Which question format is best suited for an EBP project designed to
resolve a clinical unit dilemma?
A) Descriptive qualitative question
B) PICO(T) formatted question
C) Financial cost-benefit question
D) Medical diagnosis question
Correct Answer: B) PICO(T) formatted question
Rationale: The PICO(T) format is the gold standard for clinical nursing EBP projects
as it aligns clinical practice issues with searchable research metrics.
Question 12: Identify the missing PICO(T) element in this question: "Do compression
stockings reduce the risk of deep vein thrombosis in post-operative knee
replacement patients?"
A) Population
B) Intervention
C) Comparison
D) Outcome
Correct Answer: C) Comparison
Rationale: The question lacks a explicit comparison group (e.g., compared to
sequential compression devices or no stockings).
Question 13: What does the "I" stand for in a PICO(T) question aimed at preventing
a specific condition?
A) Identification
B) Investigation
C) Intervention
D) Institution
Correct Answer: C) Intervention
Rationale: The "I" always stands for the Intervention, treatment, or clinical action
under review.
Question 14: Which of the following represents a "T" component in an EBP
question?
A) During the immediate post-operative period
B) Within a suburban clinic setting
C) Treated with oral antibiotics
D) Total knee arthroplasty patients
Correct Answer: A) During the immediate post-operative period
Rationale: "Immediate post-operative period" establishes a temporal boundary or
timeframe for observing the clinical outcome.
Question 15: Why is a precise definition of the Population (P) critical when writing a
clinical question?
A) It determines the statistical software to be used
B) It ensures that the literature found is directly applicable to the nurse's actual
clinical subset
C) It serves as a replacement for the research hypothesis
D) It dictates the salary requirements of the nursing research team
4|Page
