title: Editor's response: Group vs. categorical data in epidural studies.
authors.affiliation: The University of Newcastle, Newcastle, New South Wales, Australia.
authors.forename: Nikolai
authors.initials: N
authors.lastname: Bogduk
mesh_terms: D000305:Adrenal Cortex Hormones / Q000008:administration & dosage*; D006801:Humans; D008159:Lumbar Vertebrae; D010146:Pain / Q000188:drug therapy* / Q000453:epidemiology*; D011843:Radiculopathy / Q000188:drug therapy* / Q000453:epidemiology*; D012585:Sciatica / Q000188:drug therapy*; D013256:Steroids / Q000008:administration & dosage*
chemical_list: D000305:Adrenal Cortex Hormones; D013256:Steroids