Meta-analysis is an evaluation of medical literature regarding a particular intervention resulting in using the statistical procedure to calculate the effect size of the intervention.
Research Summaries: Meta-analysis
- Question One
Meta-analysis is an evaluation of medical literature regarding a particular intervention resulting in using the statistical procedure to calculate the effect size of the intervention. According to Conn, Ruppar, Phillips and Chase (2012), meta-analysis is an essential comparative type of research that aspires to identify the intervention that is most effective since it focuses on the magnitude of the intervention effect instead of the statistical significance test. This research technique relies on the primary studies to establish the effect sizes among various studies using different intervention procedures and then tries to establish the effect of the unknown intervention.
Meta-synthesis is a qualitative approach to systematic reviews of literature whose purpose is to break down the findings, finding any underlying patterns of essential features across the studies, and combining the conclusions into a comprehensive report (Korhonen, Hakulinen-Viitanen, Jylhä, and Holopainen, 2013). The newly constituted report can be used for a variety of reasons: first, a theoretical framework in a given field may be developed from the combination of reports. Secondly, an original phenomenon may be conceptualized through explicating existing theories. Finally, a broader qualitative description of a research phenomenon is attained through meta-synthesis. Notably, the three functions of meta-synthesis are complementary and may often overlap.
The similarity between the two methods is that they are conducted after the systematic research review. Additionally, they are both usable in developing a new knowledge base for subsequent studies regarding a specific phenomenon. Nevertheless, the approaches are fundamentally different. Meta-analysis is concerned with statistical aggregation of results to measure the overall effect of size intervention, meta-synthesis utilized qualitative methodology to aggregate information for thematic analysis (Yavchitz, Ravaud, Hopewell, Baron, and Boutron, 2014).
- Question Two
The purpose of meta-analyses is to employ statistical approaches to come up with pooled estimate near to the unknown common truth based on the amount of the allowable error in every study reviewed. The target audience is the post-graduate medical students. Although there is no distinct author for the technique, Karl Pearson first published the research method in British Medical Journal.
Conn, V. S., Ruppar, T. M., Phillips, L.J.& Chase, J. D. (2012). Using meta-analyses for comparative effectiveness research. Journal of the American Academy of Nursing. 60(4): 182-190
Korhonen, A., Hakulinen-Viitanen, T., Jylhä, V., & Holopainen, A. (2013). Meta-synthesis and Evidence-Based Health Care – A Method for Systematic Review. Scandinavian Journal of Caring Sciences. 27(4): 1027-1034
Yavchitz, A., Ravaud, P., Hopewell, S., Baron, G., & Boutron, I. (2014). Impact of Adding a Limitations Section to Abstracts of Systematic Reviews on Readers’ Interpretation: A Randomized Controlled Trial. BMC Medical Research Methodology. 14(1): 1-18
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