Table 3.
Five-Year RR of Death by Era and Characteristic
| Patient Group | Era |
|||||
|---|---|---|---|---|---|---|
| 1990-1994 |
1995-1999 |
2000-2005 |
||||
| RR | P | RR | P | RR | P | |
| Age, years | ||||||
| 1-9.99 | 1.0 | 1.0 | 1.0 | |||
| ≥ 10 | 2.26 | < .001 | 2.40 | < .001 | 3.10 | < .001 |
| ≥ 15 | 2.61 | < .001 | 2.65 | < .001 | 3.97 | < .001 |
| < 1 | 3.65 | < .001 | 4.92 | < .001 | 7.81 | < .001 |
| Sex | ||||||
| Female | 1.0 | 1.0 | 1.0 | |||
| Male | 1.17 | < .001 | 1.34 | < .001 | 1.16 | .0213 |
| Race* | ||||||
| White | 1.0 | 1.0 | 1.0 | |||
| Black | 1.73 | < .001 | 1.60 | < .001 | 1.37 | .0119 |
| Other | 1.58 | < .001 | 1.16 | .0121 | 1.27 | .0056 |
| Ethnicity* | ||||||
| Non-Hispanic | 1.0 | 1.0 | 1.0 | |||
| Hispanic or Latino | 1.31 | .0024 | 1.16 | .0645 | 1.47 | < .001 |
| Immunophenotype | ||||||
| B cell | 1.0 | 1.0 | 1.0 | |||
| T cell | 1.75 | < .001 | 1.46 | < .001 | 2.04 | < .001 |
| NCI risk group† | ||||||
| Standard risk | 1.0 | 1.0 | 1.0 | |||
| High risk | 2.42 | < .001 | 2.52 | < .001 | 3.59 | < .001 |
NOTE. P values compare RR of the death to the baseline value defined as RR of 1.0 for each characteristic.
Abbreviations: NCI, National Cancer Institute; RR, relative risk.
*
Self-reported race or ethnicity.
†
Standard, age 1-9.99 years and initial WBC < 50,000/μL; high, age ≥ 10 years and/or initial WBC ≥ 50,000/μL.