Regression toward the mean

Also found in: Dictionary, Thesaurus, Medical, Wikipedia.

Regression toward the mean

The tendency that a random variable will ultimately have a value closer to its mean value.

References in periodicals archive ?

In an attempt to correct our analyses for regression dilution bias (27), we calculated regression toward the mean based on these data and found larger effects sizes than for uncorrected estimates.

Association of Blood Eosinophil and Blood Neutrophil Counts with Asthma Exacerbations in the Copenhagen General Population Study

Elmer, "Estimating the effect of regression toward the mean under stochastic censoring," The American Journal of Epidemiology, vol.

Are the effects of homeopathy attributable to a statistical artefact? A reanalysis of an observational study

We also compared both solutions with an untreated control group, a comparison that is rarely performed but which is necessary to control for regression toward the mean. Finally, we measured symptoms after stopping sinus irrigation, to gain new information about the rate of relapse of symptoms.

A comparison of two nasal irrigation solutions with no treatment in chronic sinusitis sufferers

If the concept of regression toward the mean holds, would it be expected that the beta of XYZ will rise or fall?

Evaluating the level of critical thinking in introductory investments courses

Mlodinow provides lessons on what he calls "a field of subtlety," from the basic laws of probability, to regression toward the mean and availability bias.

The Drunkard's Walk: How Randomness Rules Our Lives

During expansion in the 1990s, a large percentage of risk contract enrollees tended to be recent joiners, who may be healthier than long-term enrollees because of regression toward the mean (Welch, 1985; Riley, Rabey, and Kasper, 1989).

Trends in the health status of Medicare risk contract enrollees

Any factor that reduces the correlation between two sets of scores contributes to regression toward the mean. We discuss five: errors of measurement, conditional errors of measurement, differential growth, changes in the content of the developmental scale, and changes in the norming sample.

Gifted today but not tomorrow? Longitudinal changes in ability and achievement during elementary school