Association between Alzheimer's/Parkinson's diseases and cancers: Modifying effects of alcohol consumption and viral infections revealed by an ecological study. [PDF]
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Impact of surgical volume and specialist availability on thyroidectomy outcomes in Brazil: an ecological study with a nationwide retrospective analysis of 230,345 cases (2008-2023). [PDF]
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Associations between food retailer availability and violent crime by neighborhood SES in Chicago, IL: an ecological study. [PDF]
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The changing impact of non-pharmaceutical interventions on COVID-19 transmission across different pandemic stages in 12 Asian countries: an ecological study. [PDF]
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Association between healthiness of community food environments and diet-related health outcomes in regional Australia: an ecological study. [PDF]
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Ecological Studies and the Ecological Fallacy
AAP Grand Rounds, 2001Ecological studies involve groups of people, rather than individuals, as the units of study. Since group data are easier to obtain (eg, census or other national survey information), these studies are often used to generate hypotheses for further study.
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