Spearman's rank correlations between activity and damage scores
| MITAX and MDI | MYOACT and YODAM | |
|---|---|---|
| Muscular | 0.57 | 0.58 |
| Skeletal | 0.22 | 0.22 |
| Cutaneous | 0.38 | 0.33 |
| Gastrointestinal | 0.49 | 0.73 |
| Pulmonary | 0.5 | 0.63 |
| Cardiac | 0.13 | 0.24 |
MDI, myositis damage index; MITAX, myositis intention to treat index; MYOACT, myositis activity assessment; MYODAM, myositis damage score.