title: Underestimation of the reliability of codes for rheumatoid arthritis within administrative data: comment on the article by Ng et al.
authors.forename: Gabriela
authors.initials: G
authors.lastname: Schmajuk
authors.forename: Jinoos
authors.initials: J
authors.lastname: Yazdany
mesh_terms: D018501:Antirheumatic Agents / Q000627:therapeutic use*; D001172:Arthritis, Rheumatoid / Q000188:drug therapy*; D016208:Databases, Factual; D005260:Female; D006801:Humans; D008297:Male; D014493:United States Department of Veterans Affairs
chemical_list: D018501:Antirheumatic Agents