title: Comparative efficacy trials with no placebo group cannot determine efficacy.
authors.affiliation: George Institute for Global Health and Sydney Medical School, University of Sydney, Sydney NSW 2000, Australia clin@george.org.au.
authors.forename: Chung-Wei Christine
authors.initials: CW
authors.lastname: Lin
authors.affiliation: St Vincent's Hospital Clinical School and Pharmacology, School of Medical Sciences, Faculty of Medicine, University of New South Wales, NSW, Australia.
authors.forename: Richard O
authors.initials: RO
authors.lastname: Day
authors.affiliation: South Western Sydney Clinical School, Faculty of Medicine, University of New South Wales.
authors.forename: Ian
authors.initials: I
authors.lastname: Harris
authors.affiliation: George Institute for Global Health and Sydney Medical School, University of Sydney, Sydney NSW 2000, Australia.
authors.forename: Chris G
authors.initials: CG
authors.lastname: Maher
authors.affiliation: Faculty of Pharmacy and Centre for Education and Research on Ageing, University of Sydney.
authors.forename: Andrew
authors.initials: A
authors.lastname: McLachlan
mesh_terms: D000588:Amines / Q000627:therapeutic use*; D000700:Analgesics / Q000627:therapeutic use*; D000893:Anti-Inflammatory Agents / Q000008:administration & dosage*; D003509:Cyclohexanecarboxylic Acids / Q000627:therapeutic use*; D005260:Female; D006801:Humans; D017116:Low Back Pain / Q000188:drug therapy*; D008297:Male; D008775:Methylprednisolone / Q000008:administration & dosage*; D011843:Radiculopathy / Q000188:drug therapy*; D005680:gamma-Aminobutyric Acid / Q000627:therapeutic use*
chemical_list: D000588:Amines; D000700:Analgesics; D000893:Anti-Inflammatory Agents; D003509:Cyclohexanecarboxylic Acids; D005680:gamma-Aminobutyric Acid; D008775:Methylprednisolone