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Determining true difference between treatment groups
1Internal Medicine Residency Program, Department of Medicine, Stony Brook Medicine - Mather Hospital, Port Jefferson, NY, USA; LCardinal@matherhospital.org.
Abstract:
In this article, the author reviews the P value and how it is used to determine true difference of outcome in treatment groups. P value, standard deviation, standard error of the mean, bias, and confidence interval are discussed in common language, with a minimum of jargon and with clinical examples.
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