Results of the systematic literature search for each recommendation topic
| Recommendation (number and topic) | Retrieved references by systematic literature search (n) | Articles included in the systematic reviews (n) |
|---|---|---|
| 1. Pre-UPIA differential diagnosis and investigations | 540 | 51 |
| 2. History and physical examination | 2914 | 37 |
| 3. Acute phase reactants | 3699 | 18 |
| 4. Autoantibodies | 13217 | 64 |
| 5. X-rays | 3585 | 25 |
| 6.1. MRI | 2595 | 11 |
| 6.2. Ultrasound | 2111 | 2 |
| 7. Genetic markers | 3109 | 26 |
| 8. Synovial biopsy | 6536 | 4 |
| 9. Predictors of persistence (chronicity) | 437 | 7 |
| 10. Measures of clinical disease activity | 1013 | 5 |
| Total | 39756 | 250 |
UPIA, undifferentiated peripheral inflammatory arthritis.