- Association between clinical characteristics and idiopathic inflammatory myositis (IIM) types.
| Clinical characteristic | IIM types | ||||
|---|---|---|---|---|---|
| DM | PM | IBM | Anti-synthetase | P-value | |
| n (%) | |||||
| Heliotrope rash (Yes) | 7 (100.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0.112 |
| Gottron’s papules | 9 (100.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0.035* |
| V sign | 3 (100.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0.548 |
| Shawl sign | 3 (100.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0.548 |
| Raynaud’s phenomenon | 1 (50.0) | 1 (50.0) | 0 (0.0) | 0 (0.0) | 0.867 |
| mechanics hands | 2 (50.0) | 0 (0.0) | 0 (0.0) | 2 (50.0) | 0.006** |
| Painless muscle weakness (proximal/distal) | 16 (64.0) | 7 (28.0) | 1 (4.0) | 1 (4.0) | 0.006** |
| Dysphagia | 5 (50.0) | 4 (40.0) | 1 (10.0) | 0 (0.0) | 0.237 |
| Arthritis | 3 (42.9) | 2 (28.6) | 0 (0.0) | 2 (28.6) | 0.096 |