Azathioprine/6-mercaptopurine doses
| Drug | Dose issues | Result |
| Azathioprine | No patients | 115 |
| Starting dose (mg/kg/day) | ||
| Mean | 1.9 | |
| Range | 0.5–4.0 | |
| Current dose (mg/kg/day) | ||
| Mean | 1.9 | |
| Range | 0.5–4.1 | |
| Duration (months) | ||
| Mean | 21.7 | |
| Range | 3.5–102.1 | |
| 6-Mercaptopurine | No patients | 55 |
| Starting dose (mg/kg/day) | ||
| Mean | 0.9 | |
| Range | 0.3–1.9 | |
| Current dose (mg/kg/day) | ||
| Mean | 1.1 | |
| Range | 0.3–3.3 | |
| Duration (months) | ||
| Mean | 41.4 | |
| Range | 3.7–81.2 |