title: The early history of meta-analysis.
authors.affiliation: Northwestern University, Evanston, IL, USA.
authors.forename: Larry V
authors.initials: LV
authors.lastname: Hedges
mesh_terms: D035843:Biomedical Research / Q000266:history*; D002986:Clinical Trials as Topic / Q000266:history*; D003627:Data Interpretation, Statistical; D049673:History, 20th Century; D015201:Meta-Analysis as Topic; D012107:Research Design; D012196:Review Literature as Topic