Decreases in serum levels of S100A8/9 (calprotectin) correlate with improvements in total swollen joint count in patients with recent-onset rheumatoid arthritis

Table 1 Baseline characteristics of patients with recent-onset RA and healthy controls^a

Characteristics	Recent-onset RA (n= 43)	Healthy controls (n= 32)
Gender, F/M	30/13	11/21
Mean age, years (±SD)	50.90 ± 16.40	43.97 ± 15.4
Mean CRP, mg/L (±SD)	16.20 ± 20
Mean ESR, mm/1^{st hour} (±SD)	34.20 ± 23.72
Mean SJC out of 66 (±SD)	10.00 ± 9.28
Mean DAS28 score (±SD)	5.31 ± 1.51
RF positivity, n (%)	32 (74.4%)
Anti-CCP positivity, n (%)	22 (51.2%)
DMARDs/GCs, number of patients	42/35

^aAnti-CCP, anticyclic citrullinated peptide antibody; CRP, C-reactive protein; DAS28, Disease Activity Score for 28 joints; DMARDs, disease-modifying antirheumatic drugs; RA, rheumatoid arthritis; ESR, erythrocyte sedimentation rate; F, female; GCs, glucocorticoids; M, male; RF, rheumatoid factor.

ISSN: 1478-6362