Volunteers in a study are assigned randomly to groups. Some of the volunteers receive an herbal supplement that is reputed to control nausea, and some of the volunteers are assigned to a control group where a placebo is administered. This is an example of a(n):
longitudinal study.
appraisal tool.
meta-analysis.
RCT.
The Correct Answer is D
A. Longitudinal study: A longitudinal study involves repeated observations of the same variables over a period of time, but it does not necessarily include random assignment or control groups.
B. Appraisal tool: An appraisal tool is used to assess the quality of studies, not to conduct the study itself.
C. Meta-analysis: A meta-analysis combines the results of multiple studies, rather than assigning participants randomly to different groups within a single study.
D. RCT: A randomized controlled trial (RCT) involves randomly assigning participants to either an intervention group or a control group, which is the method described in the question.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. Avoiding: Avoiding conflict would involve not addressing the issue or avoiding the conversation, which is not the case here.
B. Compromising: Compromising involves making mutual concessions to reach a solution that is acceptable to both parties, which is demonstrated by the charge nurse agreeing to cover the nurse’s patients in exchange for help with the drug count.
C. Cooperating: Cooperating would involve working together to solve the problem, but without a clear exchange or compromise, which does not fully describe this situation.
D. Competing: Competing involves a win-lose approach, where one party’s needs are met at the expense of the other’s, which does not apply here as both parties are making concessions.
Correct Answer is A
Explanation
A. Evaluate the quality of the research against the standards for that type of research: Assessing research quality based on established standards ensures that the study's design, methodology, and findings are reliable and valid for its particular research type.
B. Select only studies with a sample size of at least 100 people: While sample size is important, it is not the sole determinant of a study's quality. Other factors like study design, methodology, and relevance also play crucial roles.
C. Discard systematic reviews and meta-analyses since they are the weakest form of evidence: Systematic reviews and meta-analyses are actually considered high levels of evidence as they synthesize data from multiple studies, providing comprehensive insights.
D. Accept only studies that use a randomized controlled trial design: While RCTs are a gold standard for certain types of research, other study designs are also valuable and appropriate depending on the research question and context.
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