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Table 3 Feasibility of the mSASSS vs.

From: Scoring radiographic progression in ankylosing spondylitis: should we use the modified Stoke Ankylosing Spondylitis Spine Score (mSASSS) or the Radiographic Ankylosing Spondylitis Spinal Score (RASSS)?

  All radiographs (n= 809)* All radiographs from patients with RASSS available at year 12
(n= 341)*
All baseline radiographs from patients with baseline - year 2 interval available
(n= 184)*
  mSASSS RASSS % RASSS in radiographs with mSASSS mSASSS RASSS % mSASSS RASSS % RASSS in radiographs with mSASSS
Available status scores (≤ 3 missing VC per segment) 809 629 78% 341 277 81% 184 134 73%
Available 2-year progression intervals 520 330 63% 239 159 67% 164 96 59%
  1. RASSS - availability of the status and progression scores.
  2. *n = number of radiographs. mSASSS, modified Stoke Ankylosing Spondylitis Spine Score; RASSS, radiographic Ankylosing Spondylitis Spinal Score; VC, vertebral corner.