title: Appropriate econometric methods for pharmacoeconometric studies of retrospective claims data: an introductory guide.
authors.forename: Joel W
authors.initials: JW
authors.lastname: Hay
mesh_terms: D016208:Databases, Factual; D017850:Economics, Pharmaceutical; D006801:Humans; D008329:Managed Care Programs / Q000191:economics*; D017059:Models, Econometric