Dermatomyositic
Conditions
Interventions
Gold Standard:Clinical outcomes (whether combined with malignant tumor)
Index test:The 
risk 
prediction 
model 
of 
dermatomyositis 
combined 
with 
tumor 
Sponsors
Sun Yat-Sen Memorial Hospital of Sun Yat-Sen University
Eligibility
Sex/Gender
All
Age
85 Years to 1 Years
Inclusion criteria
Inclusion criteria: According to the diagnosis criteria of dermatomyositis proposed by Bohan and Peter in 1975, patients who meet any 3 or 4 criteria in 5 and 1-4 below: 1. Proximal symmetry of weak muscles in the extremities, with or without difficulty in swallowing and respiratory muscle weakness; 2. With elevated muscle enzymes; 3. With electromyography shows myogenic changes; 4. With abnormal muscle biopsy; 5. Patients with skin characteristic changes.
Exclusion criteria
Exclusion criteria: 1. Patients with incomplete clinical records and incomplete related examinations; 2. Only diagnosis as suspicious DM; 3. Patients with malignant tumors before diagnosis of dermatomyositis; 4. Patients with overlapping syndrome, that is, combined other rheumatic immune diseases (such as systemic lupus erythematosus, scleroderma, polymyositis, rheumatoid arthritis, etc.).
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Consistency index;SEN, SPE, ACC, AUC of ROC; | — |
Countries
China
Contacts
Public ContactJunmin Zhang
Sun Yat-Sen Memorial Hospital of Sun Yat-Sen University
Outcome results
None listed