Table 2.
The prevalence of IBP (%) according to different criteria in patients referred because of chronic back pain
| Assessor | IBP according to… | AxSpA | No-axSpA (n=223) |
All (n=403) |
|
| AS (n=88) |
nr-axSpA (n=92) |
||||
| Blinded rheumatologist | Global evaluation | 80.7 | 81.5 | 56.1 | 67.3 |
| Calin’s criteria | 79.6 | 79.4 | 74.9 | 76.9 | |
| Berlin Criteria | 81.8 | 80.4 | 67.7 | 73.7 | |
| ASAS criteria | 75.0 | 73.9 | 60.5 | 66.8 | |
| Diagnosing rheumatologist | Global evaluation | 92.1 | 88.0 | 41.3 | 63.0 |
| Calin’s criteria | 87.5 | 82.6 | 73.1 | 78.4 | |
| Berlin criteria | 85.2 | 82.6 | 55.2 | 68.0 | |
| ASAS criteria | 89.8 | 78.3 | 64.6 | 73.2 | |
| Patient | Calin’s criteria | 73.6 | 76.7 | 79.5 | 77.5 |
| Berlin criteria | 87.4 | 85.6 | 81.7 | 83.8 | |
| ASAS criteria | 79.3 | 68.9 | 69.0 | 71.2 | |
AS, ankylosing spondylitis; ASAS, Assessment of SpondyloArthritis international Society; IBP, inflammatory back pain; SpA, spondyloarthritis; nr-axSpA, non-radiographic axial spondyloarthritis.