We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleEconometrics in outcomes research: the use of instrumental variables.AuthorsNewhouse JP; McClellan MPublicationAnnual review of public health, 1998, Vol 19, p17ISSN0163-7525Publication typearticleDOI10.1146/annurev.publhealth.19.1.17