| N (%) |
---|---|
Muscle biopsy (n=89) | Â |
Performed | 44 (49.4) |
Consistent with JDM | 29 (65.9) |
EMG (n=86) | Â |
Performed | 36 (41.9) |
Consistent with JDM | 25 (69.4) |
MRI (n=87) | Â |
Performed | 74 (85.1) |
Consistent with JDM | 61 (82.4) |
Combination of ≥2 studies (n=91) |  |
Performed | 48 (52.7) |
2 studies consistent with JDM | 26 (54.2) |
A study consistent with JDM | 22 (45.8) |