Table 1

Baseline characteristics of the study group

CharacteristicPatients (n=622)1-150
Female 386 (62)
Age at study start (years)53.3 (18–86)
IgM RF+ (>10 IU)510 (82)
HLA-DR4+336 (54)
ESR1-151 (mm/1st hour)40.7 (2.0–135.0)
Disease activity score4.0 (2.8–5.6)
Ritchie Articular Index12.3 (3.0–27.0)
Health Assessment Questionnaire0.67 (0–1.97)
DMARD1-151(first year)566 (91)
DMARD (follow up)591 (95)
Corticosteroids (first year)124 (20)
Corticosteroids (follow up)212 (34)
  • 1-150 Mean values (range) and numbers (percentages) are given.

  • 1-151 ESR = erythrocyte sedimentation rate; DMARD = disease modifying antirheumatic drug.