As expected for regression toward the mean, SNOT-20 scores declined slightly (-1.
For purposes of evaluating regression toward the mean in 18 control participants (phase 1), we calculated its size for 4 variants of SNOT scores.
Biased Selection and Regression Toward the Mean in Three Medicare HMO Demonstrations: A Survival Analysis of Enrollees and Disenrollees.
Medicare Capitation Payments to HMOs in Light of Regression Toward the Mean in Health Care Costs.
Error is the most obvious contributor to regression toward the mean
First, it tests the hypothesis that the performance effect of change is affected by regression toward the mean
(Brown, 1982; Harrison and March, 1984).
This rate of convergence is much slower than the within-group regression toward the mean
(the within-group intergenerational correlation is about .
When you hit the high 70s and 80s there's something called the regression toward the mean
, and you get that back and forth in the scores over a period of time.