meta-analysis

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meta-analysis

 [met″ah-ah-nal´ĭ-sis]
any systematic method that uses statistical analysis to integrate the data from a number of independent studies.

meta analysis

A method that uses statistical techniques to combine results from different studies and obtain a quantitative estimate of the overall effect of a particular intervention or variable on a defined outcome—i.e., it is a statistical process for pooling data from many clinical trials to glean a clear answer. Meta-analysis produces a stronger conclusion than can be provided by any individual study.

Cons
Bias, potential for analytical sloppiness, lack of understanding of basic issues, failure to consider major covariates, and overstating the strengths and precision of the results.

meta-analysis

Data synthesis, quantitative overview Data analysis A systematic method that uses statistical techniques for combining results from different studies to obtain a quantitative estimate of the overall effect of a particular intervention or variable on a defined outcome; MA produces a stronger conclusion than can be provided by any individual study. See Cochran Collaboration, Cumulative meta-analysis.

meta-analysis

An attempt to improve the reliability of the findings of medical research by combining and analyzing the results of all discoverable trials on the same subject. In crude terms the advantages are obvious: trials that find against a hypothesis will cancel out the effect of those that find for it. Pooling of raw data is not, however, without statistical hazard and it has become apparent that meta-analysis can introduce its own sources of inaccuracy. The method is currently undergoing refinement.
References in periodicals archive ?
transit agencies, observed "scale economies for smaller firms, and scale diseconomies for larger ones." [123] The metastudy of DeBorger et al.
The most thorough and authoritative recent metastudy surveying multiple individual corn ethanol lifecycle analyses was judged to be Murphy et al., "New Perspectives on the Energy Return on (Energy) Investment (EROI) of Corn Ethanol." This study is actually less favorable and finds a neutral 1:1 EROI.
Systematic reviews of bladder training and voiding programmes in adults: a synopsis of findings on theory and methods using metastudy techniques.
The Study: Scottish researchers conducted a metastudy where they reviewed the results published from 1990 to 2011 of studies on preventing recurrent infections.
See also the metastudy by de Mooij and Ederveen, "Corporate Tax Elasticities," p.
Efford, Miller, Duncan, and Efford (2010) identified three ways to analyze a journal's historical evolution and changing dynamics: (a) an analysis of special issue topics, (b) a qualitative analysis, and (c) a quantitative metastudy. Special issue topics published in a journal help identify important and timely issues within a discipline as reflected by editor insight and societal changes.
The main outcome of this investigation corresponds with the conclusions of the Russel (1999) metastudy for media-supported instruction.
3 based on 1997-2002 data from the metastudy of Lewandowski and Hochstotter (31) and 2005 data from Lorigo et al.
Qualitative research synthesis has been previously conducted, mostly in the health sciences (Campbell et al., 2003; Paterson, Thorne, Canam, & Jillings, 2001), and sometimes referred to as "meta-ethnography" (Noblit & Hare, 1988); "metasynthesis" (Sandelowski, Docherty, & Emden, 1997); or "metastudy" (Paterson et al.).
(11) For a metastudy on the diverse and fluid caring practices in Indigenous families and same sex families, see A.
Mohr recently conducted a "metastudy" of 14 studies on MS and stress that was published in the March 19, 2004, issue of the British Medical Journal.
The validity of the assumption was also questionable for a metastudy of the effects of soil properties on Cd behaviour (Sauve et al.