Seronegative pSS (n = 40) | Seropositive pSS (n = 192) | P-value | |
---|---|---|---|
Low Complement 3 | 10/40 (25.00) | 66/192 (34.40) | 0.250 |
Low Complement 4 | 0/40 (0.00) | 17/192 (8.90) | 0.105 |
Gamma globulin, g/L | 30.10 (26.50–35.00) | 32.80 (28.95–37.95) | 0.012* |
Immunoglobulin A, g/L | 2.47 (1.87–3.50) | 2.98 (2.26–3.93) | 0.027* |
Immunoglobulin G, g/L | 14.20 (12.20–15.70) | 17.45 (13.83–21.45) | 0.000* |
Immunoglobulin M, g/L | 1.21 (0.89–2.07) | 1.17 (0.81–1.56) | 0.172 |
ANA positivity | 22/40 (55.00) | 183/192 (95.30) | 0.000* |
RF positivity | 4/40 (10.00) | 50/179 (27.90) | 0.017* |
Anti-CCP positive | 1/30 (3.30) | 7/138 (5.10) | 1.000 |
Anti-TGA positive | 4/13 (30.80) | 16/86 (18.60) | 0.517 |
Anti-TPO positivity | 8/13 (61.50) | 26/84 (31.00) | 0.066 |
Anti-TRAb positivity | 0/7 (0.00) | 5/52 (9.60) | 1.000 |