We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleEstimating treatment effects using observational data.AuthorsD'Agostino RB Jr; D'Agostino RB SrPublicationJAMA, 2007, Vol 297, Issue 3, p314ISSN1538-3598Publication typearticleDOI10.1001/jama.297.3.314