title: Use of the American College of Rheumatology N (ACR-N) index of improvement in rheumatoid arthritis: argument in favor.
authors.affiliation: Center for Drug Evaluation and Research, FDA, Rockville, Maryland 20857, USA. siegelj@cber.fda.gov
authors.forename: Jeffrey N
authors.initials: JN
authors.lastname: Siegel
authors.forename: Bo-Guang
authors.initials: BG
authors.lastname: Zhen
mesh_terms: D018501:Antirheumatic Agents / Q000627:therapeutic use*; D001172:Arthritis, Rheumatoid / Q000188:drug therapy* / Q000453:epidemiology*; D002986:Clinical Trials as Topic; D006305:Health Status Indicators; D006801:Humans; D016896:Treatment Outcome
chemical_list: D018501:Antirheumatic Agents