Table 4.
Descriptive data for articles on MRI and SpA fulfilling the inclusion criteria
| 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 | ||
MRI, magnetic resonance imaging; SpA, spondyloarthritis; AS, ankylosing spondylitis; DD, mean disease duration;
IBP, inflammatory back pain; NILBP, noninflammatory low-back pain; no LBP, no low-back pain; mo, months; NR, mean disease duration not reported.