Table 1. Demographic, clinical, serological and therapeutic features of patients with rheumatoid arthritis (n = 14).

Females, no.	13
Age, median/25°-75° percentile years	58.5 (50–67)
Disease duration, median/25°-75° percentile months	72 (33–225)
DAS28 by ESR, median/25°-75° percentile	3.2 (2.4–3.8)
SEROLOGICAL FEATURES, no. (%)
RF+	10 (71.4)
ACPA+	6 (42.8)
ACPA+/RF+	6 (42.8)
ACPA-/FR-	4 (28.6)
ESR, median/25°-75° percentile mm/h	13 (6.5–19.2)
CRP, median/25°-75° percentile mg/dl	0.05 (0–0.3)
CIGARETTE SMOKING, no. (%)
Smokers	2 (14.3)
Non-smokers	7 (50)
Ex-smokers	5 (35.7)
CONCOMITANT TREATMENT
Glucocorticoids, no. (%)	6 (42.8)
Weekly dose of PDN, median/25°-75° percentile mg	0/0-35
DMARDs, no. (%)	7 (50)
Biologic DMARDs, no. (%)	7 (50)

DAS28 = disease activity score; ESR = erythrocyte sedimentation rate; RF = rheumatoid factor; ACPA = anticitrullinated protein antibody; CRP = C-reactive protein; PDN = prednisone; DMARDs = disease-modifying antirheumatic drugs.