Table 3.
Treatments n (%)
| Thiopurines (n = 429) | No thiopurines (n = 383) | P value | |
| TPMT activity | 283 (66) | - | |
| Low | 5 (1.8) | - | |
| Intermediate | 43 (15.2) | - | |
| High | 235 (83) | - | |
| Azathioprine | 341 (79.5) | - | |
| Mercaptopurine | 60 (14) | - | |
| Azathioprine + Mercaptopurine | 28 (6.5) | - | |
| Infliximab | 112 (26.1) | 7 (1.8) | < 0.001 |
| Adalimub | 50 (11.7) | 3 (0.8) | < 0.001 |
| Other immunosuppressants | 29 (6.8) | 4 (1) | < 0.001 |
Patients (98.2%) treated with thiopurines have intermediate or high activity. Most of the patients treated with thiopurines take azathioprine. TPMT: Thiopurine S-methyltransferase.