P. Austin. Medical decision making : an international journal of the Society for Medical Decision Making, 29 (6):
661-77(2009)5458<m:linebreak></m:linebreak>Propensity score.
R. Spector, and G. Park. Drug intelligence & clinical pharmacy, 19 (12):
916-9(December 1985)3291<m:linebreak></m:linebreak>Mesures de contrast; Regression to the mean.