Drug doses according to treatment arm
| Months from randomisation | Continuation arm | Withdrawal arm | ||
| Prednisolone mg/day | Azathioprine mg/kg/day | Prednisolone mg/day | Azathioprine mg/kg/day | |
| 0 | 5–7.5 | 1 | 5 | 0.75 |
| 1 | 5–7.5 | 1 | 4 | 0.75 |
| 2 | 5–7.5 | 1 | 4 | 0.75 |
| 3 | 5 | 1 | 2 | 0 |
| 4 | 5 | 1 | 1 | 0 |
| 5 | 5 | 1 | 0 | 0 |
| 12 | 5 | 1 | 0 | 0 |
| 18 | 4 | 1 | 0 | 0 |
| 19 | 4 | 1 | 0 | 0 |
| 20 | 3 | 1 | 0 | 0 |
| 21 | 3 | 1 | 0 | 0 |
| 22 | 2 | 1 | 0 | 0 |
| 23 | 1 | 1 | 0 | 0 |
| 24 | 0 | 1 | 0 | 0 |
| 30 | 0 | 1 | 0 | 0 |