Frequency of primary disease requiring corticosteroid treatment
| Etidronate (n=26) | Placebo (n=23) | |
|---|---|---|
| Asthma | 9 | 12 |
| Polymyalgia rheumatica | 6 | 2 |
| Systemic lupus erythematosus | 4 | 5 |
| Emphysema | 1 | 1 |
| Fasciitis | 1 | 0 |
| Giant cell arteritis | 2 | 1 |
| Polyarteritis nodosa | 1 | 1 |
| Bronchiectasis | 1 | 0 |
| Fibrosing alveolitis | 0 | 1 |
| Scleroderma | 1 | 0 |