Table 3 Correlations with clinical and laboratory parameters of anti-CCP antibody-positive and -negative primary Sjögren syndrome patients
Anti-CCP-positive (n = 14) | Anti-CCP-negative (n = 127) | P value | |
|---|---|---|---|
Age (range), years | 41 (34.5–52.2) | 49 (39–60) | 0.134 |
Disease duration, years | 2.4 (1.40–7.5) | 2.5 (0.98–5.2) | 0.415 |
Synovitis, number (percentage) | 12 (85.7) | 32 (25.2) | <0.001 |
Extra-glandular involvement, number (percentage) | 9 (64.3) | 72 (56.7) | 0.777 |
Erythrocyte sedimentation rate (range), mm/1st hour | 34 (24.25–45.5) | 27 (16.5–38) | 0.101 |
Rheumatoid factor, number (percentage) | 10 (71.4) | 84 (66.1) | 0.774 |
Anti-nuclear antibodies, number (percentage) | 13 (92.9) | 121 (95.3) | 0.527 |
Anti-La (SSB) antibodies, number (percentage) | 10 (71.4) | 105 (82.7) | 0.291 |
Anti-Ro (SSA) antibodies, number (percentage) | 6 (42.9) | 49 (38.6) | 0.779 |
Focus score of greater than 1, number (percentage) | 9 (64.3) | 85 (67.5) | 0.773 |