NURS 4100 WEEK 3 QUIZ: QUALITY
AND SAFETY THROUGH EVIDENCE
BASED PRACTICE
1. Which component of the PICO(T) format represents the ‘O’ when formulating a clinical
question?
A. The primary intervention being studied.
B. The comparison group receiving standard care.
C. The timeframe required for the study.
D. The expected effect or measure of the intervention.
Answer: D
Conceptual Explanation: In PICO(T), ‘O’ stands for Outcome, which is the result or
measurement the clinician is interested in achieving or observing.
2. According to the hierarchy of evidence, which of the following is considered the ‘gold
standard’ for testing the effects of a specific intervention?
A. Case-control studies.
B. Expert opinion and consensus reports.
,C. Descriptive or qualitative studies.
D. Randomized Controlled Trials (RCTs).
Answer: D
Conceptual Explanation: RCTs are considered Level II evidence (or Level I when
synthesized in systematic reviews) because they minimize bias through randomization and
control groups.
3. What is the primary difference between a systematic review and a meta-analysis?
A. A systematic review uses qualitative data, while a meta-analysis uses only quantitative
data.
B. Meta-analyses are conducted by individual researchers, while systematic reviews
require a panel of experts.
C. Systematic reviews are lower on the evidence hierarchy than meta-analyses.
D. A meta-analysis uses statistical methods to combine data from multiple studies, whereas
a systematic review summarizes findings narratively.
Answer: D
Conceptual Explanation: A meta-analysis is a type of systematic review that uses a
statistical technique to synthesize the results of several independent studies to produce a
single estimate of effect.
, 4. In the context of Quality Improvement (QI), what does the ‘D’ represent in the PDSA cycle?
A. Document the findings.
B. Develop the hypothesis.
C. Do: Carry out the plan or intervention.
D. Disseminate the results to stakeholders.
Answer: C
Conceptual Explanation: The PDSA cycle stands for Plan-Do-Study-Act. ‘Do’ involves
implementing the change or test on a small scale.
5. Which of the following describes ‘Clinical Significance’ in evidence-based practice?
A. The probability that the results occurred by chance alone (p < 0.05).
B. The practical importance of treatment effect for the patient or clinician.
C. The power of a study to detect a difference between groups.
D. The number of participants enrolled in a clinical trial.
Answer: B
Conceptual Explanation: Clinical significance refers to whether the results are meaningful
in a real-world clinical setting, regardless of statistical p-values.
6. Which barrier is most commonly cited by nurses as an obstacle to implementing Evidence-
Based Practice (EBP)?
A. Lack of interest in patient safety.
AND SAFETY THROUGH EVIDENCE
BASED PRACTICE
1. Which component of the PICO(T) format represents the ‘O’ when formulating a clinical
question?
A. The primary intervention being studied.
B. The comparison group receiving standard care.
C. The timeframe required for the study.
D. The expected effect or measure of the intervention.
Answer: D
Conceptual Explanation: In PICO(T), ‘O’ stands for Outcome, which is the result or
measurement the clinician is interested in achieving or observing.
2. According to the hierarchy of evidence, which of the following is considered the ‘gold
standard’ for testing the effects of a specific intervention?
A. Case-control studies.
B. Expert opinion and consensus reports.
,C. Descriptive or qualitative studies.
D. Randomized Controlled Trials (RCTs).
Answer: D
Conceptual Explanation: RCTs are considered Level II evidence (or Level I when
synthesized in systematic reviews) because they minimize bias through randomization and
control groups.
3. What is the primary difference between a systematic review and a meta-analysis?
A. A systematic review uses qualitative data, while a meta-analysis uses only quantitative
data.
B. Meta-analyses are conducted by individual researchers, while systematic reviews
require a panel of experts.
C. Systematic reviews are lower on the evidence hierarchy than meta-analyses.
D. A meta-analysis uses statistical methods to combine data from multiple studies, whereas
a systematic review summarizes findings narratively.
Answer: D
Conceptual Explanation: A meta-analysis is a type of systematic review that uses a
statistical technique to synthesize the results of several independent studies to produce a
single estimate of effect.
, 4. In the context of Quality Improvement (QI), what does the ‘D’ represent in the PDSA cycle?
A. Document the findings.
B. Develop the hypothesis.
C. Do: Carry out the plan or intervention.
D. Disseminate the results to stakeholders.
Answer: C
Conceptual Explanation: The PDSA cycle stands for Plan-Do-Study-Act. ‘Do’ involves
implementing the change or test on a small scale.
5. Which of the following describes ‘Clinical Significance’ in evidence-based practice?
A. The probability that the results occurred by chance alone (p < 0.05).
B. The practical importance of treatment effect for the patient or clinician.
C. The power of a study to detect a difference between groups.
D. The number of participants enrolled in a clinical trial.
Answer: B
Conceptual Explanation: Clinical significance refers to whether the results are meaningful
in a real-world clinical setting, regardless of statistical p-values.
6. Which barrier is most commonly cited by nurses as an obstacle to implementing Evidence-
Based Practice (EBP)?
A. Lack of interest in patient safety.
