Table 2

Multivariate linear regression analysis of factors associated with ASDAS-CRP and BASDAI

Standard coefficientRegression coefficient (95% CI)p ValueStandard coefficientRegression coefficient (95% CI)p Value
HLA-B27 positivity−0.11−0.23 (−0.40 to −0.05)0.01−0.13−0.53 (−0.86 to −0.21)<0.001
Caucasian race−0.16−0.56 (−0.83 to −0.28)<0.001−0.17−0.91 (−1.45 to −0.38)0.001
Male genderNSNSNS−0.09−0.34 (−0.68 to −0.00)0.048
CRPNININI0.110.18 (0.03 to 0.33)0.02
ESRNININI0.130.31 (0.10 to 0.52)0.01
MRI spinal inflammation0.100.24 (0.04 to 0.44)0.02NSNSNS
MRI SIJ inflammationNSNSNS−0.16−0.66 (−1.00 to −0.32)<0.001
  • ASDAS, Ankylosing Spondylitis Disease Activity Score (CRP-based); BASDAI, Bath Ankylosing Spondylitis Disease Activity Index; CRP, C reactive protein; ESR, erythrocyte sedimentation rate; HLA-B27, human leucocyte antigen B27; NI, not included in multivariate analysis; NS, not significant in multivariate analysis; SIJ, sacroiliac joints.