title: A statistical approach to indices of disease activity in rheumatoid arthritis with reference to a trial of indomethacin.
mesh_terms: D001172:Arthritis, Rheumatoid / Q000188:drug therapy* / Q000503:physiopathology; D002986:Clinical Trials as Topic; D005163:Factor Analysis, Statistical; D006801:Humans; D007213:Indomethacin / Q000627:therapeutic use*; D010653:Phenylbutazone / Q000627:therapeutic use; D010919:Placebos
chemical_list: D010919:Placebos; D010653:Phenylbutazone; D007213:Indomethacin