Regression to the mean.
Novack
Gary D
GD
Crockett
R Stephens
RS
D002986:Clinical Trials as Topic / Q000379:methods*; D005128:Eye Diseases / Q000628:therapy*; D006801:Humans; D009885:Ophthalmology / Q000379:methods*; D018579:Patient Selection; D012044:Regression Analysis