Guidelines for Application of Metaanalysis in Environmental Epidemiology

A. Blair, J. Burg, J. Foran, H. Gibb, S. Greenland, R. Morris, G. Raabe, D. Savitz, J. Teta, D. Wartenberg, O. Wong, R. Zimmerman

Research output: Contribution to journalArticlepeer-review


The use of meta-analysis in environmental epidemiology can enhance the value of epidemiologic data in debates about environmental health risks. Meta-analysis may be particularly useful to formally examine sources of heterogeneity, to clarify the relationship between environmental exposures and health effects, and to generate information beyond that provided by individual studies or a narrative review. However, meta-analysis may not be useful when the relationship between exposure and disease is obvious, when there are only a few studies of the key health outcomes, or when there is substantial confounding or other biases which cannot be adjusted for in the analysis. Recent increases in the use of meta-analysis in environmental epidemiology have highlighted the need for guidelines for the application of the technique. Guidelines, in the form of desirable and undesirable attributes, are presented in this paper for various components of a metaanalysis including study identification and selection; data extraction and analysis; and interpretation, presentation, and communication of results, Also discussed are the appropriateness of the use of meta-analysis in environmental health studies and when metaanalysis should or should not be used.

Original languageEnglish (US)
Pages (from-to)189-197
Number of pages9
JournalRegulatory Toxicology and Pharmacology
Issue number2
StatePublished - Oct 1995

ASJC Scopus subject areas

  • Toxicology


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