| Patient | Age | Sex | Number positive ASAS criteria | HLA B27 +ve | Diagnosis |
|---|---|---|---|---|---|
| 1 | 39 | M | 5/5 | No | Mechanical back pain |
| 2 | 34 | M | 5/5 | Yes | Ankylosing Spondylitis |
| 3 | 28 | M | 5/5 | Yes | Ankylosing Spondylitis |
| 4 | 37 | M | 5/5 | Yes | Mechanical back pain |
| 5 | 38 | M | 5/5 | Yes | Ankylosing Spondylitis |
| 6 | 22 | F | 4/5 | No | Mechanical back pain |