Table 2.
Correlation of SAA with AAV-specific indices and laboratory data.
| Correlation coefficient (r) | p value | |
|---|---|---|
| BVAS | 0.642 | <0.001 |
| FFS | 0.367 | 0.001 |
| VDI | 0.136 | 0.243 |
| SF-36 PCS score | -0.456 | <0.001 |
| SF-36 MCS score | -0.394 | <0.001 |
| WBC count | 0.292 | 0.011 |
| Hemoglobin | -0.569 | <0.001 |
| Platelet count | 0.324 | 0.005 |
| Blood urea nitrogen | 0.350 | 0.002 |
| Creatinine | 0.317 | 0.006 |
| Total protein | -0.292 | 0.011 |
| Serum albumin | -0.700 | <0.001 |
| AST | 0.206 | 0.077 |
| ALT | 0.222 | 0.055 |
| ESR | 0.611 | <0.001 |
| CRP | 0.629 | <0.001 |
SAA: serum amyloid A; AAV: ANCA-associated vasculitis; ANCA: antineutrophil cytoplasmic antibody; BVAS: Birmingham Vasculitis Activity Score; FFS: five-factor score; VDI: vasculitis damage index; SF-36: Short-Form 36-Item Health Survey; PCS: physical component summary; MCS: mental component summary; WBC: white blood cell; AST: aspartate aminotransferase; ALT: alanine aminotransferase; ESR: erythrocyte sedimentation rate; CRP: C-reactive protein.