Comparison of features
| . | White (%)6 . | Chinese (%) . | P . |
|---|---|---|---|
| N | 1054 | 642 | |
| Age older than 65 y | 470 (45) | 114 (18) | < .001 |
| Sex (male) | 638 (61) | 358 (56) | .053 |
| Constitutional symptoms | 281 (27) | 134 (21) | .006 |
| Palpable spleen | 681/768 (89) | 289 (45) | < .001 |
| Palpable liver | 365/735 (50) | 112 (17) | < .001 |
| Hemoglobin < 100 g/L | 371 (35) | 427 (67) | < .001 |
| WBC count higher than 25 × 109/L | 101 (10) | 94 (15) | .002 |
| Platelets count higher than 400 × 109/L | 321 (31) | 101 (16) | < .001 |
| Platelets count no higher than 100 × 109/L | 174 (17) | 297 (46) | < .001 |
| Blood blasts at least 1% | 370/1018 (37) | 115 (18) | < .001 |
| Cytogenetic abnormality | 123/409 (30) | 54/186 (29) | .797 |
| JAK2V617F | 203/648 (59) | 159/238 (67) | .040 |
| . | White (%)6 . | Chinese (%) . | P . |
|---|---|---|---|
| N | 1054 | 642 | |
| Age older than 65 y | 470 (45) | 114 (18) | < .001 |
| Sex (male) | 638 (61) | 358 (56) | .053 |
| Constitutional symptoms | 281 (27) | 134 (21) | .006 |
| Palpable spleen | 681/768 (89) | 289 (45) | < .001 |
| Palpable liver | 365/735 (50) | 112 (17) | < .001 |
| Hemoglobin < 100 g/L | 371 (35) | 427 (67) | < .001 |
| WBC count higher than 25 × 109/L | 101 (10) | 94 (15) | .002 |
| Platelets count higher than 400 × 109/L | 321 (31) | 101 (16) | < .001 |
| Platelets count no higher than 100 × 109/L | 174 (17) | 297 (46) | < .001 |
| Blood blasts at least 1% | 370/1018 (37) | 115 (18) | < .001 |
| Cytogenetic abnormality | 123/409 (30) | 54/186 (29) | .797 |
| JAK2V617F | 203/648 (59) | 159/238 (67) | .040 |