title: Uncontrolled before-after studies: discouraged by Cochrane and the EMJ.
authors.forename: Steve
authors.initials: S
authors.lastname: Goodacre
mesh_terms: D000900:Anti-Bacterial Agents / Q000627:therapeutic use*; D002511:Cephalosporins / Q000627:therapeutic use*; D004363:Drug Utilization / Q000706:statistics & numerical data*; D024841:Fluoroquinolones / Q000627:therapeutic use*; D006801:Humans
chemical_list: D000900:Anti-Bacterial Agents; D002511:Cephalosporins; D024841:Fluoroquinolones
keywords: publication; research, methods