Table 1 Characteristics of the studied rheumatoid arthritis patients and osteoarthritis patients
Characteristics | RA patients | OA patients |
|---|---|---|
Disease duration (years) median (IQR) | 8 (5–15.5) | 7 (4–14.5) |
Duration of morning stiffness/minutes median (IQR) | 60 (60–120) | 22.5 (17.5–30) |
Tender joints median (IQR) | 9 (5–16) | 3 (2–5) |
Swollen joint median (IQR) |  6 (3-8) | – |
Rheumatoid nodules no. (%) | 11 (55) | – |
Chest symptoms no. (%) | 2 (10) | – |
Sicca symptoms no. (%) | 2 (10) | – |
Hemoglobin (g/dl) | 11.35 ± 1.35 | 12.2 ± 1.5 |
ESR (mm/h) median (IQR) | 47.4 (33.8–78.8) | 20 (11.25–25) |
CRP (mg/L) median (IQR) | 9 (5.8–48) | 5 (3.2–26) |
RF titre median (IQR) | 64 (28–128) | – |
Anti-CCP titre median (IQR) | 65 (25.8–205) | – |
DAS 28 median (IQR) | 4.8 (4.02–5.2) | – |
Simple Erosion Narrowing score median (IQR) | 19 (12.3–31.5) | – |
Kellgren-Lawrence | ||
 Grade I | – | 2 (10) |
 Grade II | – | 10 (50) |
 Grade III | – | 7 (35) |
 Grade IV | – | 1 (5) |
WOMAC median (IQR) | – | 34.5 (24.5-44) |
KOFUS median (IQR) | – | 3 (2-5) |