RD - Commission on Dietetic Registration (CDR) Practice Test

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Which is NOT a component of meta-analysis?

Inclusion criteria are clearly defined
Peer-reviewed data are preferred
Studies must have a similar design
Data are presented in a narrative manner

The correct answer is: Data are presented in a narrative manner

In meta-analysis, the objective is to quantitatively combine the results of multiple studies to arrive at a robust conclusion. One of the hallmarks of meta-analysis is that it emphasizes the numerical integration of results from various studies, often utilizing statistical methods to analyze and present the data collectively. When data is presented in a narrative manner, it typically refers to qualitative synthesis rather than the quantitative approach that characterizes meta-analysis. In a meta-analysis, researchers focus on the aggregation of data to calculate an overall effect size, meaning that the results are typically reported in a statistical format, such as mean differences, odds ratios, or hazard ratios. This approach allows for more precise conclusions and greater statistical power. The other components mentioned, such as clearly defined inclusion criteria, the preference for peer-reviewed data, and the requirement for studies to have a similar design, are all essential to conducting a meta-analysis. Inclusion criteria help ensure that only relevant studies are included, peer-reviewed data lend credibility and reliability to the findings, and having similar study designs ensures that the results can be compared and synthesized accurately.