title: Aspirin is not associated with more toxicity than other nonsteroidal antiinflammatory drugs in patients with rheumatoid arthritis treated with methotrexate.
abstract: OBJECTIVE
  To compare the clinical and laboratory toxicities of aspirin vs nonsteroidal antiinflammatory drugs (NSAID) in combination with low dose methotrexate (MTX).
  
  
  METHODS
  We retrospectively examined 34 patients with rheumatoid arthritis (RA) who completed 12 months of a prospective MTX trial. Analysis included descriptive and logistic regression.
  
  
  RESULTS
  Twelve patients took an average of 4.5 g aspirin daily; 22 patients took other NSAID at stable doses. Limiting toxicity was not different between aspirin and NSAID treatment groups, respectively, for stomatitis (33 vs 27%), gastrointestinal symptoms (25 vs 18%), hepatic (25 vs 27%), or other toxicity. However, using logistic regression procedures, weight adjusted weekly MTX dose and prednisone dose correlated with toxicity.
  
  
  CONCLUSIONS
  While toxicity is common when aspirin or NSAID are used with MTX to treat RA, there is no clinical difference between aspirin and NSAID with respect to that toxicity during 12 months of therapy.
authors.affiliation: Department of Medicine, University of Iowa, Iowa City 52242.
authors.forename: T W
authors.initials: TW
authors.lastname: Rooney
authors.forename: D E
authors.initials: DE
authors.lastname: Furst
authors.forename: R
authors.initials: R
authors.lastname: Koehnke
authors.forename: L
authors.initials: L
authors.lastname: Burmeister
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000894:Anti-Inflammatory Agents, Non-Steroidal / Q000009:adverse effects* / Q000627:therapeutic use; D001172:Arthritis, Rheumatoid / Q000188:drug therapy*; D001241:Aspirin / Q000009:adverse effects* / Q000627:therapeutic use; D004311:Double-Blind Method; D004359:Drug Therapy, Combination; D005260:Female; D006801:Humans; D008297:Male; D008727:Methotrexate / Q000627:therapeutic use*; D008875:Middle Aged; D011241:Prednisone / Q000627:therapeutic use; D012189:Retrospective Studies
chemical_list: D000894:Anti-Inflammatory Agents, Non-Steroidal; D001241:Aspirin; D011241:Prednisone; D008727:Methotrexate