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Table 2 Association between the sum radiographic sacroiliitis score and functional status/spinal mobility in patients with axial spondyloarthritis

From: Relevance of structural damage in the sacroiliac joints for the functional status and spinal mobility in patients with axial spondyloarthritis: results from the German Spondyloarthritis Inception Cohort

Parameters Unadjusted mixed model analysis (all patients, n = 210), B (95% CI) Adjusted mixed model analysis (all patients, n = 210), B (95% CI) Adjusted mixed model analysis (patients with AS, n = 105), B (95% CI) Adjusted mixed model analysis (patients with nr-axSpA, n = 95), B (95% CI)
Outcome: BASFI
Sacroiliitis sum score (0–8) 0.09 (-0.05 to 0.22) 0.10 (0.01 to 0.19) 0.16 (-0.03 to 0.36) 0.09 (-0.11 to 0.30)
mSASSS, points (0–72) - 0.05 (0.03 to 0.07) 0.04 (0.02 to 0.06) 0.08 (0.03 to 0.14)
BASDAI, points NRS (0–10) - 0.81 (0.74 to 0.88) 0.84 (0.74 to 0.93) 0.75 (0.63 to 0.86)
CRP, mg/l - 0.00 (-0.01 to 0.01) 0.00 (-0.01 to 0.01) 0.00 (-0.02 to 0.01)
Male sex - -0.02 (-0.40 to 0.37) 0.03 (-0.48 to 0.55) -0.13 (-0.74 to 0.48)
Outcome: BASMI
Sacroiliitis sum score (0–8) 0.20 (0.11 to 0.30) 0.12 (0.03 to 0.21) 0.17 (-0.02 to 0.37) 0.21 (0.01 to 0.40)
mSASSS, points (0–72) - 0.07 (0.05 to 0.09) 0.07 (0.04 to 0.09) 0.04 (-0.01 to 0.10)
BASDAI, points NRS (0–10) - 0.22 (0.15 to 0.29) 0.23 (0.14 to 0.32) 0.18 (0.07 to 0.30)
CRP, mg/l - 0.01 (0.00 to 0.02) 0.01 (0.00 to 0.03) 0.00 (-0.03 to 0.01)
Male sex - 0.00 (-0.39 to 0.39) 0.32 (-0.21 to 0.85) -0.35 (-0.92 to 0.22)
  1. mSASSS modified Stoke Ankylosing Spondylitis Spine Score, AS Ankylosing Spondylitis, nr-axSpA non-radiographic axial spondyloarthritis, BASFI Bath Ankylosing Spondylitis Functional Index, CRP C-reactive protein, BASDAI Bath Ankylosing Spondylitis Disease Activity Index, NRS numerical rating scale, BASMI Bath Ankylosing Spondylitis Metrology Index
  2. Main results are marked in bold