Table 1.
Comprehensive coverage of clinical features and investigations of study cohort of 68 cases
| Variables | Numbers (%) |
|---|---|
| Mean age at diagnosis | 36.5 (range 16–68) years |
| Age more than 50 years | 9 (13.2) |
| Male:Female ratio | 1:2.4 |
| Acute IIM | 17 (25.0) |
| Muscle pain | 34 (50.0) |
| Dependent for ambulation | 26 (38.2) |
| Neck muscle weakness | 52 (76.4) |
| Bulbar weakness | 23 (33.8) |
| Trunk weakness | 50 (73.5) |
| Brisk DTR | 7 (10.2) |
| Sluggish or absent DTR | 36 (52.9) |
| Leukocytosis | 23 (33.8) |
| Raised ESR | 26 (38.2) |
| Raised SGOT/SGPT | 42 (61.7) |
| Raised CPK | 58 (85.2) |
| EMG suggestive of myopathy | 59 (86.7) |
| Classical EMG of IIM | 40 (58.8) |
| Biopsy suggestive of IIM | 51 (75.0) |
| Initial treatment: prednisolone alone | 55 (80.8) |
| Initial treatment: azathioprine alone | 12 (17.6) |
IIM, idiopathic inflammatory myositis; DTR, deep tendon reflex; ESR, erythrocyte sedimentation rate; SGOT/SGPT, serum hepatic enzymes; CPK, serum creatine phosphokinase; EMG, needle electromyography.