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Baseline characteristics of the patients at initiation of azathioprine treatment
| Characteristic | |
| Age (yr) (mean ± SD) | 34 (34.76 ± 11.70) |
| Sex (M/F) | 56/55 |
| Disease duration (yr) (range) | 0-7.3 |
| Disease extent n (%) | |
| Pancolitis | 51 (45.9) |
| Proctosigmoiditis | 29 (26.2) |
| Left sided | 31 (27.9) |
| Indication of use n (%) | |
| Steroid dependent/refractory | 54 (48.65) |
| Azathioprine monotherapy for naïve severe disease | 16 (14.41) |
| Combination therapy for naive severe disease | 41 (36.94) |
