1. Which of the following is a key characteristic of a cohort
study?
- A. Random assignment of participants
- B. Longitudinal data collection
- C. Cross-sectional data collection
- D. Experimental intervention
- ANS: B. Longitudinal data collection
- Rationale: Cohort studies involve following a group of
participants over time to observe outcomes.
,2. What is the primary purpose of a meta-analysis in nursing
research?
- A. To collect primary data
- B. To summarize and integrate findings from multiple studies
- C. To develop new theories
- D. To conduct experimental studies
- ANS: B. To summarize and integrate findings from
multiple studies
- Rationale: Meta-analysis combines results from different
studies to draw a comprehensive conclusion.
3. Which of the following is an example of a confounding
variable in a research study?
- A. Independent variable
- B. Dependent variable
- C. Variable that influences both the independent and
dependent variables
- D. Control variable
- ANS: C. Variable that influences both the independent and
dependent variables
, - Rationale: A confounding variable is an external factor that
affects the relationship between the independent and dependent
variables.
4. What is the role of a literature review in the research process?
- A. To collect primary data
- B. To identify gaps in existing research
- C. To conduct statistical analysis
- D. To develop clinical guidelines
- ANS: B. To identify gaps in existing research
- Rationale: A literature review helps researchers understand
the current state of knowledge and identify areas that need further
investigation.
5. Which statistical test is commonly used to assess the
relationship between two categorical variables?
- A. Independent t-test
- B. Pearson correlation
- C. Chi-square test
- D. ANOVA
- ANS: C. Chi-square test
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