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Do we need USPs?

Martin Halperin1

  • 1Monash University, Victoria. halperin@med.monash.edu.au

Australian Family Physician
|October 12, 2005
PubMed

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Regression toward the mean (“RTM”) is a phenomenon in which extremely high or low values—for example, and individual’s blood pressure at a particular moment—appear closer to a group’s average upon remeasuring. Although this statistical peculiarity is the result of random error and chance, it has been problematic across various medical, scientific, financial and psychological applications. In particular, RTM, if not taken into account, can interfere when researchers try to extrapolate results...