Fig. 2From: Mapping the nomenclature, methodology, and reporting of studies that review methods: a pilot methodological reviewPyramid graph illustrating a comparison of nomenclature from PubMed search and included studies. Frequencies are based on terms as reported in the study title and/or abstract, and taking into account studies that used more than one term (i.e., total terms for included studies n = 37 and total terms for all studies from PubMed search n = 254). "Meta-epidemiological" includes all nine variants that were captured by the search term “meta-epidemiologic*”Back to article page