RA | SpA spectrum | SLE (APS) | Systemic sclerosis | Sjögren’s syndrome | Inflammatory myopathies | Systemic vasculitis | Giant cell arteritis | Polymyalgia rheumatica | |
Pathology | 21 | 20 | 21 | 19 | 19 | – | – | 19 | – |
Clinical feature | 21 | 20 | 21 (20) | 20 | 19 | 18 | 20 | 19 | 21 |
Outcome | 21 | 20 | 21 | 19 | 19 | – | – | 19 | – |
Investigations | 21 | 20 | 21 (20) | 20 | 20 | 17 | 19 | 19 | 21 |
APS, anti-phospholipid syndrome; RA, rheumatoid arthritis; SLE, systemic lupus erythematosus; SpA, spondyloarthritis.