title: Design using historical controls.
authors.affiliation: Department of Neurology, Baylor College of Medicine, Houston, Texas, USA.
authors.forename: Albert
authors.initials: A
authors.lastname: Yen
authors.forename: Ericka
authors.initials: E
authors.lastname: Simpson
authors.forename: Lanny
authors.initials: L
authors.lastname: Haverkamp
authors.forename: Stanley
authors.initials: S
authors.lastname: Appel
mesh_terms: D000690:Amyotrophic Lateral Sclerosis / Q000266:history*; D015982:Bias; D002986:Clinical Trials as Topic / Q000379:methods*; D003627:Data Interpretation, Statistical; D019992:Databases as Topic / Q000706:statistics & numerical data; D005500:Follow-Up Studies; D049673:History, 20th Century; D006801:Humans; D012107:Research Design; D012189:Retrospective Studies; D013997:Time Factors