Table 1.
Characteristics of patientsa
| Characteristic | RA (n = 18) | OA (n = 9) |
|---|---|---|
| Age, mean yr | 61.8 | 68.4 |
| Sex, F/M | 13/6 | 6/3 |
| Disease duration, mean yr | 21.9 | - |
| Seropositiveb, % | 82% | - |
| Larsen scorec (mean ± SD) | 2.9 ± 0.6 | - |
| DMARDs, % | 72% | - |
| Steroids, % | 44% | - |
| Biologic drugs, % | 33% | - |
aRA, rheumatoid arthritis; OA, osteoarthritis; DMARDs, disease-modifying antirheumatic drugs; brheumatoid factor or anticyclic citrullinated peptide antibody-positive; cLarsen index score (1 to 5) of the biopsied joint (bone erosion present if index >1).