The scientists carried out a retrospective analysis that examined foods eaten by 304 men and women, including 72 with Alzheimer's disease, throughout their lives.

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As to the study, in order to determine the impact advance info can have on share prices, the researchers conducted a retrospective analysis of stock prices of publicly traded pharma and biotechs.

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Researchers in the Canadian Network for Observational Drug Effect Studies (CNODES) performed a retrospective observational analysis of administrative databases in Canada, the UK and the US containing more than 2 million patients newly treated with statins. 59, 636 of the subjects already had chronic kidney disease.

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Retrospective analysis is a useful albeit not gold standard form of evidence.

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For one, the groups noted the analysis is a retrospective study, not a prospective, randomized controlled clinical trial, which many regard as a gold standard for ferreting out safety concerns.

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