Demographics and osteonecrosis status of the study population
| . | Developed osteonecrosis? . | P . | ||
|---|---|---|---|---|
| Yes . | No . | Original entire CCG1882 cohort . | Subset included herein . | |
| Age | .290 | .569 | ||
| 10 to 15 years | 43 | 248 | ||
| 16 to 20 years | 8 | 62 | ||
| Sex | .030 | .034 | ||
| Male | 21 | 178 | ||
| Female | 30 | 132 | ||
| Race | .003 | .035 | ||
| White | 45 | 212 | ||
| Black | 2 | 28 | ||
| Hispanic | 4 | 55 | ||
| Other | 0 | 15 | ||
| Treatment arm RER | .780 | 1.000 | ||
| XRT | 24 | 163 | ||
| No XRT | 7 | 51 | ||
| Treatment arm SER | .270 | .459 | ||
| Standard | 7 | 45 | ||
| Augmented | 13 | 51 | ||
| . | Developed osteonecrosis? . | P . | ||
|---|---|---|---|---|
| Yes . | No . | Original entire CCG1882 cohort . | Subset included herein . | |
| Age | .290 | .569 | ||
| 10 to 15 years | 43 | 248 | ||
| 16 to 20 years | 8 | 62 | ||
| Sex | .030 | .034 | ||
| Male | 21 | 178 | ||
| Female | 30 | 132 | ||
| Race | .003 | .035 | ||
| White | 45 | 212 | ||
| Black | 2 | 28 | ||
| Hispanic | 4 | 55 | ||
| Other | 0 | 15 | ||
| Treatment arm RER | .780 | 1.000 | ||
| XRT | 24 | 163 | ||
| No XRT | 7 | 51 | ||
| Treatment arm SER | .270 | .459 | ||
| Standard | 7 | 45 | ||
| Augmented | 13 | 51 | ||
RER indicates rapid early response; SER, slow early response; and XRT, cranial irradiation therapy.