NUR 3270: NURSING RESEARCH AND
EVIDENCE-BASED PRACTICE -
COMPREHENSIVE EXAM PREP
QUESTIONS WITH VERIFIED ANSWERS
AND DETAILED EXPLANATIONS
1. A researcher is conducting a study to determine the effect of a new wound care protocol
on healing time. In this study, ‘healing time’ is considered which type of variable?
A. Independent variable
B. Confounding variable
C. Dependent variable
D. Extraneous variable
Answer: C
Conceptual Explanation: The dependent variable is the outcome or effect that the
researcher is interested in measuring. In this case, healing time depends on the
intervention (the protocol).
2. Which of the following levels of evidence is considered the ‘gold standard’ for determining
the effectiveness of a clinical intervention?
A. Systematic review or meta-analysis of all relevant RCTs
,B. Single correlational or observational study
C. Expert opinion and case studies
D. Single qualitative study
Answer: A
Conceptual Explanation: Systematic reviews and meta-analyses of Randomized
Controlled Trials (RCTs) are at the top of the evidence hierarchy for therapy/intervention
questions.
3. In the PICOT format for clinical questions, what does the ‘T’ represent?
A. Treatment
B. Target population
C. Timeframe
D. Test of significance
Answer: C
Conceptual Explanation: PICOT stands for Population, Intervention, Comparison,
Outcome, and Timeframe.
4. A nurse researcher ensures that participants’ identities are not linked to their data, even by
the researcher. This is known as:
A. Anonymity
B. Confidentiality
, C. Informed consent
D. Beneficence
Answer: A
Conceptual Explanation: Anonymity occurs when even the researcher cannot link a
participant to their specific data. Confidentiality is when the researcher knows the identity
but keeps it private.
5. The ethical principle from the Belmont Report that requires researchers to minimize harm
and maximize benefits is:
A. Justice
B. Autonomy
C. Beneficence
D. Respect for persons
Answer: C
Conceptual Explanation: Beneficence involves an obligation to do no harm and to
maximize possible benefits for study participants.
6. A researcher uses a sampling method where every member of the population has an equal
and independent chance of being selected. This is called:
A. Purposive sampling
B. Quota sampling
EVIDENCE-BASED PRACTICE -
COMPREHENSIVE EXAM PREP
QUESTIONS WITH VERIFIED ANSWERS
AND DETAILED EXPLANATIONS
1. A researcher is conducting a study to determine the effect of a new wound care protocol
on healing time. In this study, ‘healing time’ is considered which type of variable?
A. Independent variable
B. Confounding variable
C. Dependent variable
D. Extraneous variable
Answer: C
Conceptual Explanation: The dependent variable is the outcome or effect that the
researcher is interested in measuring. In this case, healing time depends on the
intervention (the protocol).
2. Which of the following levels of evidence is considered the ‘gold standard’ for determining
the effectiveness of a clinical intervention?
A. Systematic review or meta-analysis of all relevant RCTs
,B. Single correlational or observational study
C. Expert opinion and case studies
D. Single qualitative study
Answer: A
Conceptual Explanation: Systematic reviews and meta-analyses of Randomized
Controlled Trials (RCTs) are at the top of the evidence hierarchy for therapy/intervention
questions.
3. In the PICOT format for clinical questions, what does the ‘T’ represent?
A. Treatment
B. Target population
C. Timeframe
D. Test of significance
Answer: C
Conceptual Explanation: PICOT stands for Population, Intervention, Comparison,
Outcome, and Timeframe.
4. A nurse researcher ensures that participants’ identities are not linked to their data, even by
the researcher. This is known as:
A. Anonymity
B. Confidentiality
, C. Informed consent
D. Beneficence
Answer: A
Conceptual Explanation: Anonymity occurs when even the researcher cannot link a
participant to their specific data. Confidentiality is when the researcher knows the identity
but keeps it private.
5. The ethical principle from the Belmont Report that requires researchers to minimize harm
and maximize benefits is:
A. Justice
B. Autonomy
C. Beneficence
D. Respect for persons
Answer: C
Conceptual Explanation: Beneficence involves an obligation to do no harm and to
maximize possible benefits for study participants.
6. A researcher uses a sampling method where every member of the population has an equal
and independent chance of being selected. This is called:
A. Purposive sampling
B. Quota sampling
