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Comparison of Evidence of Treatment Effects in Randomized and Nonrandomized Studies — John P A Ioannidis (2001) | RDL Network
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Comparison of Evidence of Treatment Effects in Randomized and Nonrandomized Studies
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John P A Ioannidis
Stanford University
Comparison of Evidence of Treatment Effects in Randomized and Nonrandomized Studies
Article
2001
en
Authors
John P A Ioannidis
Stanford University
Abstract
1 min read
Despite good correlation between randomized trials and nonrandomized studies-in particular, prospective studies-discrepancies beyond chance do occur and differences in estimated magnitude of treatment effect are very common.
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