Table 2 Final diagnosis after 12 months of follow up by clinicians
Diagnosis | US | Non-US |
|---|---|---|
Rheumatoid arthritis | 56 | 58 |
Primary inflammatory arthritis (other than RA) | 27 | 23 |
Mechanical or degenerative disorder | 24 | 21 |
Connective tissue disease | 4 | 3 |
Other systemic inflammatory disorder | 2 | 4 |
Crystal arthritis | 3 | 3 |
Metabolic disorder | 2 | 3 |
Pain syndrome | 4 | 2 |
Drug reaction | 1 | 0 |
Not specified / unknown | 11 | 7 |
Total | 134 | 124 |