Prognostic factors: results of Cox stepwise regression analysis
| Variable . | Confidence interval . | Risk ratio . | P6-150 . |
|---|---|---|---|
| Pre-B immunophenotype | 1.04-1.74 | 1.34 | .02 |
| Male sex | 1.17-1.76 | 1.44 | .0005 |
| WBC ≥50 × 109/L | 1.19-1.92 | 1.51 | .0006 |
| CNS involvement | 1.03-2.34 | 1.55 | .036 |
| WBC ≥200 × 109/L | 1.16-2.18 | 1.59 | .003 |
| Age >6 y | 1.33-1.98 | 1.62 | .0001 |
| Pro-B immunophenotype | 1.18-2.37 | 1.68 | .004 |
| Age <1 y | 1.31-3.07 | 2.01 | .001 |
| Poor response to prednisone | 2.66-4.45 | 3.44 | .0001 |
| Nonresponse at day 33 | 3.33-6.61 | 4.69 | .0001 |
| Variable . | Confidence interval . | Risk ratio . | P6-150 . |
|---|---|---|---|
| Pre-B immunophenotype | 1.04-1.74 | 1.34 | .02 |
| Male sex | 1.17-1.76 | 1.44 | .0005 |
| WBC ≥50 × 109/L | 1.19-1.92 | 1.51 | .0006 |
| CNS involvement | 1.03-2.34 | 1.55 | .036 |
| WBC ≥200 × 109/L | 1.16-2.18 | 1.59 | .003 |
| Age >6 y | 1.33-1.98 | 1.62 | .0001 |
| Pro-B immunophenotype | 1.18-2.37 | 1.68 | .004 |
| Age <1 y | 1.31-3.07 | 2.01 | .001 |
| Poor response to prednisone | 2.66-4.45 | 3.44 | .0001 |
| Nonresponse at day 33 | 3.33-6.61 | 4.69 | .0001 |
On χ2 testing.