Table 6

Ratio of 2-year progression in each of the spinal segments of the RASSS.

Relative contribution in each of the spinal segments of the RASSS (in %)

P value for the difference


Expected

Observed


Cervical segment (12 VCs)

43%

55%

0.09


Lumbar segment (12 VCs)

43%

29%

0.04


Thoracic segment (4 VCs)

14%

16%

0.70


*n = 330 represents progression intervals. RASSS, radiographic Ankylosing Spondylitis Spinal Score; NA, not applicable.

Ramiro et al. Arthritis Research & Therapy 2013 15:R14   doi:10.1186/ar4144

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