Table 2.
Demographic, clinical and laboratory features in anti-MJ (+) and -MJ (-) patients.
| Anti-MJ (+) n = 10 |
Anti-MJ (-) n = 48 |
P 1 | |
|---|---|---|---|
| Demographic data | |||
| Male | 40% | 23% | |
| Mean age, ys (± SD) | 37.6 (± 12) | 54.6 (± 14.8) | 0.0023 |
| DM/PM/overlap (%) | 80/20/0 | 40/48/13 | DM 0.03 |
| Clinical and laboratory data | |||
| Heliotrope rash | 60% | 19% | 0.01 |
| Calcinosis | 30% | 8% | 0.09 |
| Facial erythema | 60% | 33% | ns |
| Gottron's papules | 20% | 19% | ns |
| Arthritis | 20% | 8% | ns |
| Raynaud's phenomenon | 20% | 27% | ns |
| Heart involvement | 0% | 13% | ns |
| Interstitial lung disease | 0% | 33% | 0.048 |
| Elevated CPK at last visit | 0% | 25% | ns |
1P values are by Fisher's exact test except for mean age comparison by Mann-Whitney. CPK, creatine phosphokinase; DM/PM, dermatomyositis/polymyositis; ns, not significant; SD, standard deviation.