Table 3.
Myositis intention to treat activity index (MITAX).
| Cases | Muscle disease activity (MITAX) | Constitutional (MITAX) | Cutaneous disease activity (MITAX) | Skeletal muscle disease activity (MITAX) | Total score of (MITAX) |
|---|---|---|---|---|---|
| Dermatomyositis | C | C | C | D | 0.07 |
| Dermatomyositis | B | B | D | D | 0.11 |
| Dermatomyositis | A | A | B | A | 0.22 |
| Overlap myositis (SLE) | B | B | B | C | 0.22 |
| Polymyositis | A | A | B | B | 0.55 |
| Dermatomyositis | B | B | B | C | 0.22 |
| Overlap myositis (scleroderma) | C | C | D | E | 0.03 |
| Overlap myositis (SLE) | C | C | C | C | 0.11 |
| Polymyositis | A | A | E | A | 0.66 |
| Overlap myositis (SLE) | A | A | A | B | 0.77 |
| Polymyositis | D | D | D | D | 0 |
| Dermatomyositis | A | A | B | A | 0.77 |
| Polymyositis | D | D | E | D | 0 |
| Paraneoplastic syndrome | A | A | E | E | 0.33 |
| Overlap myositis (SLE) | A | A | B | A | 0.77 |
A, highly active and need disease modifying treatment = 9 points; B, moderate activity requiring moderate therapies = 3 points; C, mild activity and requiring symptomatic therapy = 0 points; D, resolved (no medication is required) = 0 points; E, has never been present; NA, cannot be assessed.