Laboratory and serological features of the subjects with SS.
| Feature | Arthritis Group (%) n = 17 | Non-Arthritis Group (%) n = 18 |
|---|---|---|
| Anemia | 6 (35) | 5 (28) |
| Cytopenias | 9 (53) | 10 (55.5) |
| Elevated IgG | 11 (65) | 9 (50) |
| FANA-positive | 4 (23.5) | 5 (28) |
| Rheumatoid factor-positive | 16 (94) | 15 (83) |
| Anti-Ro/SSA-positive | 17 (100) | 18 (100) |
| Anti-Ro/SSA plus anti-La/SSB | 9 (52) | 11 (61) |
| Anti-citrullinated peptide antibodies | 8 (47) | 0 |
| Presence of erosions | 9 (53) | 0 |
FANA: fluorescent antinuclear antibody.