Table 3

Longitudinal relationship (model of changes) between disease activity measures and inflammation degree (SPARCC) on MRI-SI stratified for gender in five separate models

β95% CIQICβ95% CIQIC
ASDAS2.7920.850 to 4.73410 7390.909−0.112 to 1.9311462
BASDAI (0–10)0.9710.040 to 1.90312 0990.244−0.118 to 0.6061534
Night pain (0–10)0.8520.227 to 1.47611 9820.040−0.140 to 0.2201578
Patient's global disease (0–10)0.574−0.042 to 1.19112 2720.108−0.066 to 0.2821579
CRP (mg/L)0.119−0.004 to 0.24211 8340.085−0.039 to 0.2081531
  • Bold italics mean “statistically significant: p value <0.05)”.

  • Five separate models were built for both genders, each one of them including one of the disease activity parameters. All models were adjusted for age, symptom duration and HLA-B27.

  • ASDAS, Ankylosing Spondylitis Disease Activity Index; BASDAI, Bath Ankylosing Spondylitis Disease Activity Index; CRP, C reactive protein; patient's global disease, patient’s global assessment for disease activity; QIC, quasi likelihood under independence model criterion; SPARCC, Spondyloarthritis Research Consortium of Canada.