Table 2

 Descriptive analysis of all vertebral edges evaluated in this study at both assessment time points

Vertebral edges,n (%)
Baseline damage
    No damage (mSASSS‚ 0)2181 (79.4)
    Sclerosis, erosion or squaring (mSASSS‚ 1)253 (9.2)
    Syndesmophyte (mSASSS‚ 2)150 (5.5)
    Ankylosis (mSASSS‚ 3)164 (6.0)
    Missing sites36 (1.3)
Change in scorings
    No change2520 (91.7)
    Deterioration of ⩾1 mSASSS unit177 (6.5)
    Deterioration from no damage to suspicious damage59 (2.2)
    Deterioration from no damage to definite damage53 (2.4)
    Deterioration from suspicious damage to definite damage37 (14.6)
    Deterioration from syndesmophyte to ankylosis28 (18.7)