Practice Questions

What is the “number needed to treat (NNT)” in clinical research?

A. The number of patients who need to experience an adverse event.
B. The number of patients who need to be treated for one patient to benefit from an intervention.
C. The total number of patients in a study.
D. The number of treatments given per patient.
nmdcat.online BS Nursing
Jun 6, 2026

A nurse researcher is conducting an “exploratory study.” What is the primary aim of an exploratory study?

A. To test a specific hypothesis.
B. To generalize findings to a large population.
C. To investigate a little-understood phenomenon or problem to gain preliminary insights.
D. To establish cause-and-effect relationships.
nmdcat.online BS Nursing
Jun 6, 2026

What is the “ethical dilemma” of “therapeutic misconception” in clinical trials?

A. Patients mistakenly believe they are receiving a guaranteed beneficial treatment, rather than being part of a research study with uncertain outcomes.
B. Researchers misinterpret ethical guidelines.
C. Patients believe they are being harmed by the research.
D. Researchers are forced to provide therapy.
nmdcat.online BS Nursing
Jun 6, 2026

What is “replication” in research?

A. Repeating a study with the same participants.
B. Conducting a new study to confirm the findings of a previous study using similar methods.
C. Publishing the same study in multiple journals.
D. Analyzing data multiple times.
nmdcat.online BS Nursing
Jun 6, 2026

What is the primary purpose of “sampling” in research?

A. To collect all possible data.
B. To select a subset of a population to represent the larger group, making research feasible.
C. To ensure every individual participates.
D. To increase the cost of research.
nmdcat.online BS Nursing
Jun 6, 2026

A study reports an “odds ratio (OR)” of 2.5 for a specific intervention. What does this suggest?

A. The intervention has no effect.
B. The intervention is associated with 2.5 times higher odds of the outcome compared to the control.
C. The intervention is associated with 2.5 times lower odds of the outcome.
D. The sample size was too small.
nmdcat.online BS Nursing
Jun 6, 2026

What is a “confounding variable” in a research study?

A. A variable that is deliberately manipulated by the researcher.
B. A variable that is measured as the outcome.
C. An unmeasured variable that affects both the independent and dependent variables, potentially distorting the true relationship.
D. A variable that is held constant.
nmdcat.online BS Nursing
Jun 6, 2026
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