Age at diagnosis | 286 | 12 | 1.02/yr (0.97 to 1.06) | 0.516 |
Salivary gland swelling (yes/no) | 81/194 | 5/7 | 2.02 (0.62 to 6.61) | 0.247 |
Purpura/skin vasculitis (yes/no) | 29/244 | 4/4 | 4.64 (1.13 to 16.45) | 0.017 |
ANA positivity (yes/no) | 240/44 | 12/0 | – | |
RF positivity (yes/no) | 156/117 | 9/3 | 3.03 (0.80 to 11.24) | 0.102 |
SSA/SSB (yes/no) | 163/120 | 10/2 | 2.58 (0.69 to 9.63) | 0.159 |
CD4-penia (yes/no) | 35/130 | 8/3 | 8.14 (2.10 to 31.53) | 0.002 |
CD4+ (%)* | 165 | 11 | 0.57 (0.34 to 0.93) | 0.026 |
CD8+ (%)* | 165 | 11 | 1.76 (1.14 to 2.73) | 0.011 |
CD4+/CD8+ratio* | 165 | 11 | 0.23 (0.07 to 0.73) | 0.013 |
CD4+/CD8+ratio ⩽ 0.8 (yes/no) | 29/136 | 8/3 | 10.92 (2.8 to 41.83) | 0.000 |
C3 ⩽0.83 g/l† | 60 | 8 | 6.18 (1.57 to 24.22) | 0.009 |
C3 = 0.84–1.12 g/l† | 118 | 3 | 1.0 (referent) | |
C3 ⩾1.13 g/l† | 60 | 0 | – | – |
C4 ⩽0.18 g/l† | 62 | 7 | 9.49 (1.94 to 46.54) | 0.006 |
C4 = 0.19–0.30 g/l† | 116 | 2 | 1 (referent) | |
C4 ⩾0.31 g/l† | 60 | 2 | 1.60 (0.22 to 11.42) | 0.641 |
IgG ⩽12.0 g/l† | 71 | 3 | 1.41 (0.31 to 6.32) | 0.65 |
IgG = 12.1–21.4 g/l† | 133 | 5 | 1 (referent) | |
IgG ⩾21.5 g/l † | 68 | 5 | 2.54 (0.67 to 9.65) | 0.17 |