Table 3.
Patient Characteristics at Baseline: Continuous Factors
| Factor | No Extramedullary Disease | Extramedullary Disease | Total | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| P | No. | Mean | Median | SD | No. | Mean | Median | SD | No. | Mean | Median | SD | |
| Age (years) | < .001 | 2,469 | 51.4 | 52.9 | 15.9 | 769 | 46.4 | 45.7 | 16.6 | 3,238 | 50.2 | 51.1 | 16.2 |
| Hemoglobin (g/dL) | .001 | 2,448 | 9.2 | 9.1 | 2.1 | 754 | 9.5 | 9.4 | 2.3 | 3,202 | 9.2 | 9.2 | 2.1 |
| Platelets | .90* | 2,449 | 80.4 | 54.0 | 92.1 | 764 | 79.0 | 53.5 | 95.0 | 3,213 | 80.0 | 54.0 | 92.8 |
| WBC | < .001* | 2,459 | 25.2 | 8.6 | 39.4 | 765 | 52.4 | 31.7 | 65.1 | 3,224 | 31.6 | 12.0 | 48.2 |
| Blasts, marrow (%) | < .001 | 2,287 | 61.2 | 63.0 | 24.9 | 699 | 69.6 | 76.0 | 24.4 | 2,986 | 63.1 | 68.0 | 25.0 |
| Blasts, PB (%) | < .001 | 2,357 | 34.6 | 26.0 | 31.1 | 739 | 44.6 | 44.0 | 32.9 | 3,096 | 37.0 | 30.0 | 31.8 |
| CD11a | .04 | 992 | 63.2 | 79.0 | 35.7 | 108 | 70.5 | 86.5 | 32.1 | 1,100 | 63.9 | 80.0 | 35.4 |
| CD11b | < .001 | 1,175 | 24.8 | 9.0 | 32.0 | 133 | 38.2 | 29.0 | 36.0 | 1,308 | 26.1 | 10.0 | 32.6 |
| CD56 | .46 | 980 | 13.3 | 0.0 | 28.0 | 108 | 15.5 | 0.5 | 29.8 | 1,088 | 13.5 | 0.0 | 28.2 |
Abbreviations: PB, peripheral blood; SD, standard deviation.
*
t test done on log-transformed values.