| P values: use and misuse in medical literature. | |
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MedLine Citation:
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PMID: 20966898 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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P values are widely used in the medical literature but many authors, reviewers, and readers are unfamiliar with a valid definition of a P value, let alone how to interpret one correctly. Popular explanations such as "the probability that study results are due to chance" are wrong in a variety of ways and can lead to substantial errors in evaluating the evidence from research studies. Belief that "statistical significance" can alone discriminate between truth and falsehood borders on magical thinking. The article points out how to better interpret P values by avoiding common errors. Statistical analyses and P values are important tools in evidence-based medicine, but have to be used cautiously and with better understanding. |
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Authors:
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Hillel W Cohen |
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Publication Detail:
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Type: Journal Article; Research Support, N.I.H., Extramural; Review Date: 2010-10-21 |
Journal Detail:
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Title: American journal of hypertension Volume: 24 ISSN: 1941-7225 ISO Abbreviation: Am. J. Hypertens. Publication Date: 2011 Jan |
Date Detail:
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Created Date: 2010-12-17 Completed Date: 2011-02-11 Revised Date: 2011-06-30 |
Medline Journal Info:
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Nlm Unique ID: 8803676 Medline TA: Am J Hypertens Country: United States |
Other Details:
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Languages: eng Pagination: 18-23 Citation Subset: IM |
Affiliation:
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Department of Epidemiology and Population Health, Albert Einstein College of Medicine, Bronx, New York, USA. hillel.cohen@einstein.yu.edu |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Animals Confidence Intervals Data Interpretation, Statistical* Humans Models, Statistical Probability* Research Design |
| Grant Support | |
ID/Acronym/Agency:
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KL2 RR 025749/RR/NCRR NIH HHS; TL1 RR 025748/RR/NCRR NIH HHS; UL1 RR 025750/RR/NCRR NIH HHS |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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