Multivariate Poisson regression analysis investigating the effect of anti-CarP IgG positivity on focus score
| IRR | Std. Err | p Value | 95% CI of IRR | |
|---|---|---|---|---|
| Anti-CarP IgG | 1.694 | 0.402 | 0.026 | 1.064 to 2.696 |
| Age | 1.010 | 0.009 | 0.285 | 0.991 to 1.029 |
| Disease duration | 1.031 | 0.010 | 0.001 | 1.012 to 1.050 |
| RF | 1.301 | 0.328 | 0.297 | 0.793 to 2.133 |
| Anti-Ro/SSA | 0.593 | 0.173 | 0.074 | 0.334 to 1.051 |
| Anti-La/SSB | 1.991 | 0.492 | 0.005 | 1.227 to 3.232 |
| ANA | 1.423 | 0.445 | 0.445 | 0.771 to 2.627 |
Anti-CarP IgG, RF, anti-Ro/SSA, anti-La/SSB and ANA are presented dichotomously.
ANA, antinuclear antibodies; anti-CarP, autoantibodies against carbamylated proteins; Anti-Ro/SSA, antibodies against Ro/Sjögren's syndrome A antigen; Anti-La/SSB, antibodies against La/Sjögren's syndrome B antigen; IRR, incidence rate ratio; RF, rheumatoid factor.