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Table 4 Descriptive data for articles on MRI and SpA fulfilling the inclusion criteria

From: A systematic critical review on MRI in spondyloarthritis

  Study type Total number Number of AS patients (DD) Number of SpA patients (DD) Number of IBP patients (DD) Number of NILBP patients (DD) Number of no LBP patients
Sacroiliac joint        
Bollow et al. (1995) [10] Prospective case-control 125 36 (3.1 years) 36 (5.9 years)   53 (5.7 years)  
Klauser et al. (2004) [11] Prospective case-control 133    103 (NR)   30
Brandt et al. (2007) [12] Prospective cohort 158 32 (NR) 58 (NR)   68 (NR)  
Weber et al. (2010) [13] Prospective case-control 187 75 (6.1 years)   27 (29 mo) 26 (NR) 59
Wick et al. (2010) [14] Retrospective cohort 156 27 (NR) 101 (NR)   28 (NR)  
Spine        
Kim et al. (2008) [15] Retrospective case control 104 52 (NR)    52 (NR)  
Weber et al. (2009) [16] Prospective case-control 85 35 (8 years)   25 (10 mo)   35
Bennett et al. (2009) [17] Retrospective cohort 185   64 (8.5 years)   110 (NR) 11
Bennett et al. (2009) [18] Retrospective cohort 185   64 (8.5 years)   110 (NR) 11
  1. MRI, magnetic resonance imaging; SpA, spondyloarthritis; AS, ankylosing spondylitis; DD, mean disease duration;
  2. IBP, inflammatory back pain; NILBP, noninflammatory low-back pain; no LBP, no low-back pain; mo, months; NR, mean disease duration not reported.