Fig 1.
Potential impact of radiographic sacroiliitis on spinal progression.
The diagram represents the putative effect of radiographic sacroiliitis (X) on spinal radiographic progression (Y), either directly or indirectly via affecting the baseline presence of syndesmophytes (mediator, M).
Table 1.
Baseline characteristics at first radiograph.
Table 2.
Baseline characteristics of all patients with r-axSpA and nr-axSpA at recruitment in SCQM.
Fig 2.
Modified Stoke Ankylosing Spondylitis Spine Score (mSASSS) for individual patients plotted as a function of duration since symptom onset.
A. Patients with r-axSpA. B. Patients with nr-axSpA.
Fig 3.
2-year progression in the modified Stoke Ankylosing Spondylitis Spine Score (mSASSS) depicted in a cumulative probability plot.
The change in mSASSS values from start to end of individual 2-years radiographic intervals is shown for r-axSpA patients (circles) and for nr-axSpA patients (triangles).
Table 3.
Multivariable analysis for the identification of factors associated with spinal radiographic progression in axSpA.
Table 4.
Multivariable analysis for the identification of factors associated with spinal radiographic progression in axSpA (complete case analysis).
Table 5.
Multivariable analysis for the identification of factors associated with spinal radiographic progression in axSpA (model including additional variables).