Serial determination of cyclic citrullinated peptide autoantibodies predicted five-year radiological outcomes in a prospective cohort of patients with early rheumatoid arthritis

Table 1 Baseline characteristics in 99 patients with early rheumatoid arthritis

Female (%)	72
Mean age (years)	50.7
Mean disease duration (months)	4.3
Pain (100 mm VAS)	54.4
Morning stiffness (minutes)	84
Ritchie index	17.8
Tendon joint count	21.8
Swollen joint count	8.4
Nodules (%)	6
ESR (mm/1^st h)	38.4
CRP (mg/l)	32
IgM RF positive (%)	71
DAS 44	4.1
HLA DRB1*04 (%)^a	53
HLA DRB1*01 (%)^b	15.5

^aDRB1*04 includes DRB1*0401, *0404, *0405, and *0408. ^bDRB1*01 includes DRB1*0101 and *0102. CRP, C-reactive protein; DAS, disease activity score; ESR, erythrocyte sedimentation rate; IgM RF, immunoglobulin M rheumatoid factor; VAS, visual analog scale for pain.

ISSN: 1478-6362