Table 1.
Patient and treatment characteristics for photon and proton therapy cohorts.
| Photon Cohort | Proton Cohort | P-value | ||
|---|---|---|---|---|
| Patients | 101 | 94 | ||
| Follow-up (years) | 14.70(12.18–17.27 | 7.52 (6.28–8.53) | ·· | |
| Age at RT (years) | 8·98 (6.31–13.02) | 9·.39 (6.39–13.38) | 0·5224 | |
| Sex | Female | 46 (45.54% | 49 (52.13%) | 0·3914 |
| Male | 55 (54.46%) | 45 (47.87%) | ||
| Race | Asian | 1 (0.99%) | 2 (2.13%) | <0·0001* |
| Black | 22 (21.78%) | 16 (17.02%) | ||
| Hispanic | 2 (1.98%) | ·· | ||
| Other | ·· | 14 (14.90%) | ||
| White | 76 (75.25%) | 62 (65.95%) | ||
| CSF Shunt | No | 74 (73.27%) | 88 (93.62%) | 0·0002 |
| Yes | 27 (26.73%) | 6 (6.38%) | ||
| Tumor Directed Procedures | Total | 197† | 140‡ | 0·0019 |
| Surgery | Multiple Procedures | 46 | 31 | 0·1610 |
| Single Procedures | 50 | 59 | ||
| No Procedures | 5 | 4 | ||
| Mean Dose (Gy) | Brain | 16·89 (14.46–18.79) | 8·79 (6.74–10.61) | <0·0001 |
| Temporal Left | 18·70 (13.87–21.52) | 7·99 (5.60–10.62) | <0·0001 | |
| Temporal Right | 18·51 (14.17–22.49) | 7·99 (5.60–10.76) | <0·0001 |
*
When all patients are included, association of race by protocol is significant (P<0·0001. When the major categories Black and White are compared, association of race by protocol is not significant (P=0·8543).
RT=Radiation Therapy
†
96 photon therapy patients
‡
90 proton therapy patients