Table 1.

Characteristics of patients in the AIM and ATTAIN studies.

Study GroupAge*, mean (SD)Patient CharacteristicRA Duration*, mean (SD)
Sex, % femaleRace, % Caucasian
ATTAIN
  Abatacept, n = 25853 (12.4)779612 (8.5)
  Control, n = 13353 (11.3)809311 (8.9)
  Both Groups, n = 39153 (12.1)789512 (8.6)
AIM
  Abatacept, n = 43352 (12.9)78889 (7.3)
  Control, n = 21950 (12.4)82889 (7.1)
  Both Groups, n = 65251 (12.7)79889 (7.2)
Both Studies
  Abatacept, n = 69152 (12.8)789110 (7.9)
  Control, n = 35251 (12.0)819010 (7.9)
  Both Groups, n = 104352 (12.5)799110 (7.9)