NSG 448 Exam 1 V1 | NSG 448 Evidence-
Based Project Capstone | Actual Q&A with
Rationale (NSG448 Exam 1) | Grand
Canyon University
1. A nurse researcher is developing a clinical question using the PICOT format. Which of the
following components are correctly identified as part of the PICOT acronym? (Select all that
apply)
A. Population of interest
B. Intervention or area of interest
C. Comparison intervention or group
D. Outcome
E. Timeframe
F. Provider preference
Correct Answer: A, B, C, D, E
Explanation: The PICOT acronym stands for Population, Intervention, Comparison,
Outcome, and Time. It is a structured framework used to formulate clinical questions that
guide evidence-based research and practice improvements. Provider preference is not a
standard component of the PICOT structure, though it may influence the clinical application
of findings later in the process.
,2. Which level of evidence is considered the ‘gold standard’ in evidence-based practice and
sits at the top of the evidence hierarchy?
A. Systematic reviews and meta-analyses of RCTs
B. Case-control studies
C. Descriptive or qualitative studies
D. Opinions of authorities or expert committees
Correct Answer: A
Explanation: Systematic reviews and meta-analyses are considered Level I evidence
because they synthesize data from multiple randomized controlled trials (RCTs). This
synthesis provides the most robust evidence for clinical decision-making by minimizing
bias and increasing statistical power. Other levels, such as case studies or expert opinions,
are lower on the hierarchy due to higher risks of subjectivity and confounding variables.
3. When conducting a literature review, which database is specifically recognized as the
premier source for nursing and allied health literature?
A. MEDLINE
B. PsycINFO
C. CINAHL
D. Google Scholar
Correct Answer: C
,Explanation: CINAHL (Cumulative Index to Nursing and Allied Health Literature) is
specifically designed to index nursing journals and health care publications. While
MEDLINE covers broad medical research, CINAHL focuses on the specific needs of nursing
professionals and evidence-based practice projects. Utilizing CINAHL ensures that a
comprehensive search of nursing-specific evidence is performed for the capstone project.
4. A nurse is evaluating a research study for ‘internal validity.’ What is the primary focus of
this evaluation?
A. The generalizability of the findings to a larger population.
B. The consistency of the measurement tools used in the study.
C. The degree to which the intervention caused the observed change in the outcome.
D. The cost-effectiveness of the research methods employed.
Correct Answer: C
Explanation: Internal validity refers to the extent to which a study’s results are truly due
to the intervention rather than extraneous variables. Ensuring high internal validity
involves controlling for confounding factors that could influence the outcome. If internal
validity is low, the researcher cannot confidently conclude that the intervention was
effective.
5. In the context of nursing research, what is the primary purpose of an Institutional Review
Board (IRB)?
A. To protect the rights and welfare of human research subjects.
, B. To ensure the study is profitable for the hospital.
C. To publish the results in a peer-reviewed journal.
D. To select the statistical methods for the data analysis.
Correct Answer: A
Explanation: The IRB is a committee established to review research involving human
subjects to ensure ethical standards are met. Its primary mission is to protect participants
from harm and ensure that informed consent is appropriately obtained. Approval from the
IRB is a mandatory step before any data collection involving human participants can begin.
6. Which of the following are essential ethical principles outlined in the Belmont Report?
(Select all that apply)
A. Respect for persons
B. Beneficence
C. Justice
D. Fidelity
E. Veracity
Correct Answer: A, B, C
Explanation: The Belmont Report identifies three core ethical principles: Respect for
Persons, Beneficence, and Justice. Respect for persons involves recognizing autonomy and
providing protection for those with diminished autonomy. Beneficence refers to the
Based Project Capstone | Actual Q&A with
Rationale (NSG448 Exam 1) | Grand
Canyon University
1. A nurse researcher is developing a clinical question using the PICOT format. Which of the
following components are correctly identified as part of the PICOT acronym? (Select all that
apply)
A. Population of interest
B. Intervention or area of interest
C. Comparison intervention or group
D. Outcome
E. Timeframe
F. Provider preference
Correct Answer: A, B, C, D, E
Explanation: The PICOT acronym stands for Population, Intervention, Comparison,
Outcome, and Time. It is a structured framework used to formulate clinical questions that
guide evidence-based research and practice improvements. Provider preference is not a
standard component of the PICOT structure, though it may influence the clinical application
of findings later in the process.
,2. Which level of evidence is considered the ‘gold standard’ in evidence-based practice and
sits at the top of the evidence hierarchy?
A. Systematic reviews and meta-analyses of RCTs
B. Case-control studies
C. Descriptive or qualitative studies
D. Opinions of authorities or expert committees
Correct Answer: A
Explanation: Systematic reviews and meta-analyses are considered Level I evidence
because they synthesize data from multiple randomized controlled trials (RCTs). This
synthesis provides the most robust evidence for clinical decision-making by minimizing
bias and increasing statistical power. Other levels, such as case studies or expert opinions,
are lower on the hierarchy due to higher risks of subjectivity and confounding variables.
3. When conducting a literature review, which database is specifically recognized as the
premier source for nursing and allied health literature?
A. MEDLINE
B. PsycINFO
C. CINAHL
D. Google Scholar
Correct Answer: C
,Explanation: CINAHL (Cumulative Index to Nursing and Allied Health Literature) is
specifically designed to index nursing journals and health care publications. While
MEDLINE covers broad medical research, CINAHL focuses on the specific needs of nursing
professionals and evidence-based practice projects. Utilizing CINAHL ensures that a
comprehensive search of nursing-specific evidence is performed for the capstone project.
4. A nurse is evaluating a research study for ‘internal validity.’ What is the primary focus of
this evaluation?
A. The generalizability of the findings to a larger population.
B. The consistency of the measurement tools used in the study.
C. The degree to which the intervention caused the observed change in the outcome.
D. The cost-effectiveness of the research methods employed.
Correct Answer: C
Explanation: Internal validity refers to the extent to which a study’s results are truly due
to the intervention rather than extraneous variables. Ensuring high internal validity
involves controlling for confounding factors that could influence the outcome. If internal
validity is low, the researcher cannot confidently conclude that the intervention was
effective.
5. In the context of nursing research, what is the primary purpose of an Institutional Review
Board (IRB)?
A. To protect the rights and welfare of human research subjects.
, B. To ensure the study is profitable for the hospital.
C. To publish the results in a peer-reviewed journal.
D. To select the statistical methods for the data analysis.
Correct Answer: A
Explanation: The IRB is a committee established to review research involving human
subjects to ensure ethical standards are met. Its primary mission is to protect participants
from harm and ensure that informed consent is appropriately obtained. Approval from the
IRB is a mandatory step before any data collection involving human participants can begin.
6. Which of the following are essential ethical principles outlined in the Belmont Report?
(Select all that apply)
A. Respect for persons
B. Beneficence
C. Justice
D. Fidelity
E. Veracity
Correct Answer: A, B, C
Explanation: The Belmont Report identifies three core ethical principles: Respect for
Persons, Beneficence, and Justice. Respect for persons involves recognizing autonomy and
providing protection for those with diminished autonomy. Beneficence refers to the
