bmt| time: |
| time to relapse, death or end of study (in days) |
| indicator: |
| censoring indicator variable - 1 = dead or replapse, 0 = otherwise |
| recipient_age: |
| patient age |
| group: |
| risk categories based on their status at the time of transplantation |
| fab: |
| French-American-British (FAB) classification based on standard morphological criteria |