Patient Characteristics
| Characteristic | n |
| No. of patients | 467 |
| Sex | |
| Men | 250 |
| Women | 217 |
| Age (y) | |
| Median | 59 |
| Range | 17–88 |
| No. of patients older than 60 y | 210 (45) |
| Lymphoma subtype | |
| FL I–III a | 271 (58) |
| Diffuse large B-cell lymphoma | 94 (20) |
| Mantle cell lymphoma | 65 (14) |
| B-chronic lymphatic leukemia | 24 (5.1) |
| Marginal zone lymphoma | 13 (2.8) |
| Stage | |
| I | 24 (5.2) |
| II | 63 (13.5) |
| III | 104 (22.3) |
| IV | 268 (57.4) |
| E | 4 (0.9) |
| Not determined | 4 (0.9) |
| Previous therapies | |
| Chemotherapy | 445 |
| 1–3 | 342 (77) |
| 4–6 | 89 (20) |
| >7 | 14 (3) |
| Radioimmunotherapy | 22 (4.7) |
| Autologous stem cell transplantation | |
| 1 | 63 (13.4) |
| 2 | 3 (0.6) |
| Radiotherapy | 88 |
| 1 | 67 (76) |
| 2 | 16 (18) |
| ≥3 | 5 (6) |
| Bone marrow infiltration before radioimmunotherapy | |
| No. of patients | 467 |
| Infiltration | 72 (15) |
| <20% | 59 (13) |
| >20% | 13 (3) |
Data in parentheses are percentages.