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Meta-analysis: Neither quick nor easy
Open accessAbstract
BACKGROUND: Meta-analysis is often considered to be a simple way to summarize the existing literature. In this paper we describe how a meta-analysis resembles a conventional study, requiring a written protocol with design elements that parallel those of a record review. METHODS: The paper provides a structure for creating a meta-analysis protocol. Some guidelines for measurement of the quality of papers are given. A brief overview of statistical considerations is included. Four papers are reviewed as examples. The examples generally followed the guidelines we specify in reporting the studies and results, but in some of the papers there was insufficient information on the meta-analysis process. CONCLUSIONS: Meta-analysis can be a very useful method to summarize data across many studies, but it requires careful thought, planning and implementation.
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“We followed a rigorous inclusion/exclusion protocol to ensure minimisation of confounding factors amongst the RCT populations [112].”
From Estimating the Effect of Aerobic Exercise Training on Novel Lipid Biomarkers: A Systematic Review and Multivariate Meta-Analysis of Randomized Controlled Trials (2023) · cites this paper as [112]
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The Impact of Capsaicin Intake on Risk of Developing Gastric Cancers: A Meta-Analysis
Pabalan, N., Jarjanazi, H., & Özçelik, H. (2014) · Journal of Gastrointestinal Cancer · doi:10.1007/s12029-014-9610-2 · Cited by 37
Quality assessment in meta-analysis
Torre, G. L., Chiaradia, G., Gianfagna, F., Laurentis, A. D., & Boccia, S. (2006) · Italian Journal of Public Health · doi:10.2427/5937 · Cited by 38
Metadata
- Authors
- Berman, N. G., & Parker, R. A.
- Affiliations
- Harbor–UCLA Medical Center (US)
- Beth Israel Deaconess Medical Center (US)
- Corresponding author
- Berman, Nancy G
- ORCID
- Parker, Robert A
- Venue
- BMC Medical Research Methodology
- Published
- 2002-08-09
- Volume
- 2
- Issue
- 1
- Pages
- 10-10
- ISSN
- 1471-2288 (ISSN-L)
- PMC
- PMC122061
- OpenAlex
- W2123303485
- Cited by
- 270
- References
- 43
- Citations by year
- 2026: 5 · 2025: 7 · 2024: 13 · 2023: 15 · 2022: 9 · 2021: 14 · 2020: 10 · 2019: 13 · 2018: 10 · 2017: 17 · 2016: 20 · 2015: 11 · 2014: 20 · 2013: 15 · 2012: 16
- FWCI
- 2.67
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Locations
- BMC Medical Research Methodology (publishedVersion)
- PubMed Central (publishedVersion, other-oa)
- PubMed (publishedVersion)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- Funders
- National Institutes of Health (RR00425, RR 01032)
- National Center for Research Resources (RR 01032, M01RR001032, RR00425, M01RR000425)
- Topics
- Social Sciences › Decision Sciences › Statistics, Probability and Uncertainty › Meta-analysis and systematic reviews
- Physical Sciences › Mathematics › Statistics and Probability › Statistical Methods in Epidemiology
- Social Sciences › Sociology and Political Science › Delphi Technique in Research
- Keywords
- meta-analysis, protocol design, study quality assessment, reporting guidelines, statistical considerations, research planning
- MeSH terms
- Data Collection, Demography, Humans, Meta-Analysis as Topic, Treatment Outcome, Guidelines as Topic
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