Table V.
Results of univariate analysis by log-rank test.
| Variables | n | HR (95% CI) | P-value |
|---|---|---|---|
| Age, years | |||
| ≤11 | 11 | 1 | |
| >11 | 8 | 1.26 (0.21–7.40) | 0.800 |
| Gender | |||
| Female | 8 | 1 | |
| Male | 11 | 1.07 (0.18–6.37) | 0.940 |
| Immunophenotype of leukemic blasts | |||
| B-lineage | 9 | 1 | |
| T-lineage | 10 | 1.37 (0.23–8.02) | 0.730 |
| Initial leukocyte count, ×109/l | |||
| ≤52.9 | 10 | 1 | |
| >52.9 | 9 | 5.45 (0.85–35.0) | 0.083 |
| Response to prednisolone monotherapy (day 8 PB blast of <1,000/μl) | |||
| Good | 16 | 1 | |
| Poor | 3 | 1.38 (0.14–13.8) | 0.770 |
| Mean minimum leukocyte count/μl | |||
| ≤433 | 11 | 1 | |
| >433 | 8 | 6.61 (1.04–42.1) | 0.047 |
Median age, 11 years; median initial leukocyte count, 52.9×109/l; median of the mean minimum leukocyte count, 433/μl. HR, hazard ratio; CI, confidence interval; PB, peripheral blood.