Risk factors for EFS according to risk group: multivariate analysis
| Risk factors . | Standard risk RR (95% CI) . | High risk RR (95% CI) . |
|---|---|---|
| Age at diagnosis, y | ||
| 1-10 | 1.0 | 1.0 |
| Younger than 1 | — | 3.3 (2.7-4.1)3-150 |
| Older than 10 | — | 1.8 (1.5-2.1)3-150 |
| Initial WBC count | ||
| Lower than 50 000/mL | 1.0 | 1.0 |
| 50 000/mL or higher | — | 1.4 (1.2-1.7)3-150 |
| Initial platelet count | ||
| Higher than 50 000/mL | 1.0 | 1.0 |
| Lower than 50 000/mL | 1.2 (1.0-1.3)3-152 | 1.1 (0.9-1.2)3-153 |
| Sex | ||
| Females | 1.0 | 1.0 |
| Males | 1.2 (1.0-1.3)3-151 | 1.2 (1.0-1.3)3-151 |
| Liver size | ||
| Normal | 1.0 | 1.0 |
| Enlarged | 1.2 (1.0-1.3)3-152 | 1.2 (1.1-1.4)3-151 |
| Spleen size | ||
| Normal | 1.0 | 1.0 |
| Enlarged | 1.1 (1.0-1.3)3-152 | 1.1 (0.9-1.3)3-153 |
| Ethnicity | ||
| White | 1.0 | 1.0 |
| Black | 2.0 (1.6-2.5)3-150 | 1.2 (0.9-1.4)3-153 |
| Hispanic | 1.2 (0.9-1.4)3-153 | 1.4 (1.2-1.6)3-150 |
| Asian | 1.0 (0.7-1.5)3-153 | 0.6 (0.4-1.1)3-153 |
| Era | ||
| Recent | 1.0 | 1.0 |
| Early | 1.6 (1.4-1.7)3-150 | 1.4 (1.3-1.6)3-150 |
| Risk factors . | Standard risk RR (95% CI) . | High risk RR (95% CI) . |
|---|---|---|
| Age at diagnosis, y | ||
| 1-10 | 1.0 | 1.0 |
| Younger than 1 | — | 3.3 (2.7-4.1)3-150 |
| Older than 10 | — | 1.8 (1.5-2.1)3-150 |
| Initial WBC count | ||
| Lower than 50 000/mL | 1.0 | 1.0 |
| 50 000/mL or higher | — | 1.4 (1.2-1.7)3-150 |
| Initial platelet count | ||
| Higher than 50 000/mL | 1.0 | 1.0 |
| Lower than 50 000/mL | 1.2 (1.0-1.3)3-152 | 1.1 (0.9-1.2)3-153 |
| Sex | ||
| Females | 1.0 | 1.0 |
| Males | 1.2 (1.0-1.3)3-151 | 1.2 (1.0-1.3)3-151 |
| Liver size | ||
| Normal | 1.0 | 1.0 |
| Enlarged | 1.2 (1.0-1.3)3-152 | 1.2 (1.1-1.4)3-151 |
| Spleen size | ||
| Normal | 1.0 | 1.0 |
| Enlarged | 1.1 (1.0-1.3)3-152 | 1.1 (0.9-1.3)3-153 |
| Ethnicity | ||
| White | 1.0 | 1.0 |
| Black | 2.0 (1.6-2.5)3-150 | 1.2 (0.9-1.4)3-153 |
| Hispanic | 1.2 (0.9-1.4)3-153 | 1.4 (1.2-1.6)3-150 |
| Asian | 1.0 (0.7-1.5)3-153 | 0.6 (0.4-1.1)3-153 |
| Era | ||
| Recent | 1.0 | 1.0 |
| Early | 1.6 (1.4-1.7)3-150 | 1.4 (1.3-1.6)3-150 |