Formulae for calculation of ASDAS score
| ASDAS-B = 0.079 × back pain + 0.069 × duration of morning stiffness + 0.113 × patient global + 0.086 × peripheral pain/swelling + 0.293 × √ (ESR) |
| ASDAS-C = 0.121 × back pain + 0.058 × duration of morning stiffness + 0.110 × patient global + 0.073 × peripheral pain/swelling + 0.579 × Ln (CRP+1) |
ASDAS, Ankylosing Spondylitis Disease Activity Score; CRP, C reactive protein; ESR, erythrocyte sedimentation rate.