Table 1.
Patient characteristics at baseline
| Characteristic | MP (n = 423) | CTDa (n = 426) |
|---|---|---|
| Female sex, n (%) | 192 (45.4) | 184 (43.2) |
| Median age, y (range) | 73 (57-89) | 73 (58-87) |
| ISS disease stage, n (%) | ||
| I | 64 (15.1) | 46 (10.8) |
| II | 156 (36.9) | 156 (36.6) |
| III | 165 (39.0) | 168 (39.4) |
| Missing data | 38 (9.0) | 56 (13.1) |
| Median β2-microglobulin level, mg/L (range) | 4.9 (0.3-40.4) | 5.0 (0.4-64.0) |
| Paraprotein type, n (%) | ||
| IgG | 257 (60.8) | 248 (58.2) |
| IgA | 101 (23.9) | 100 (23.5) |
| IgM | 1 (0.2) | 2 (0.5) |
| No paraprotein | 5 (1.2) | 7 (1.6) |
| IgD | 3 (0.7) | 10 (2.3) |
| Light chain only | 49 (11.6) | 54 (12.7) |
| Missing data | 7 (1.7) | 5 (1.2) |
ISS indicates International Staging System; and Ig, immunoglobulin.