Table 1

Baseline characteristics of the 238 patients included in the study and the 125 patients with x rays available at baseline and 10 years

All patients (n = 238)Patients with x rays available at baseline and 10 years (n = 125)
Female (%)73.575.2
Mean disease duration (SD), years2.3 (1.2)2.2 (1.2)
Mean age (SD), years51.9 (13.0)50.7 (12.7)
Anti-CCP positive (%)60.559.2
Anti-MCV positive (%)64.361.5
IgM RF positive (%)47.944.0
SE positive (%)76.378.8
PTPN22 1858T carriers (%)34.432
Mean (SD) HAQ score0.9 (0.6)0.9 (0.6)
Erosive disease (%)55.2**54.4
Mean (SD) progression rate at baseline (SHS units/year)2.9 (4.6)**3.1 (5.0)
Presence of rheumatic nodules (%)1113
  • **n = 163

  • CCP, cyclic citrullinated peptide; HAQ, health assessment questionnaire; MCV, mutated citrullinated vimentin; PTPN22, protein tyrosine phosphatase, non-receptor type 22; RF, rheumatoid factor; SE, shared epitope ; SHS, van der Heijde modified Sharp score.