TABLE 1.
Patient characteristics by radiation treatment group
| Variable | Focal | CSI | ||||
|---|---|---|---|---|---|---|
| PRT | XRT | PRT | XRT | |||
| n (%) | n (%) | p | n (%) | n (%) | p | |
| Total (n) | 30 | 13 | 28 | 17 | ||
| Gender | 0.24 | 0.41 | ||||
| Male | 15 (50.0) | 9 (69.2) | 20 (71.4) | 14 (82.4) | ||
| Female | 15 (50.0) | 4 (30.8) | 8 (28.6) | 3 (17.7) | ||
| Race/Ethnicity | 0.51 | 0.84 | ||||
| White | 20 (66.7) | 7 (53.9) | 13 (46.4) | 9 (52.9) | ||
| Black | 2 (6.7) | 1 (7.7) | 4 (14.3) | 3 (17.7) | ||
| Hispanic/Latino | 6 (20.0) | 5 (38.5) | 7 (25.0) | 4 (23.5) | ||
| Other race* | 2 (6.7) | 0 (0.0) | 4 (14.3) | 1 (5.9) | ||
| Government Assistance | 6 (20.0) | 3 (23.1) | 0.76 | 13 (46.4) | 6 (35.3) | 0.46 |
| Histology | 0.68 | 0.67 | ||||
| Glioma | 14 (46.7) | 5 (38.5) | 1 (3.6) | 0 (0.0) | ||
| Medulloblastoma/PNET | 2 (6.7) | 1 (7.7) | 17 (60.7) | 12 (70.6) | ||
| Ependymoma | 8 (26.7) | 6 (46.2) | 0 (0.0) | 0 (0.0) | ||
| Germ Cell Tumor | 2 (6.7) | 0 (0.0) | 8 (28.6) | 3 (17.7) | ||
| Other | 4 (13.3) | 1 (7.7) | 2 (7.1) | 2 (11.8) | ||
| Tumor Location | 0.60 | 0.37 | ||||
| Supratentorial | 17 (56.7) | 6 (46.2) | 11 (39.3) | 5 (29.4) | ||
| Infratentorial | 12 (40.0) | 7 (53.9) | 17 (60.7) | 11 (64.7) | ||
| Both | 1 (3.3) | 0 (0.0) | 0 (0.0) | 1 (5.9) | ||
| Craniotomy | 0.24 | 0.38 | ||||
| No | 3 (10.0) | 0 (0.0) | 4 (14.3) | 1 (5.9) | ||
| Yes | 27 (90.0) | 13 (100.0) | 24 (85.7) | 16 (94.1) | ||
| Shunt Placement | 0.04 | 0.45 | ||||
| No | 25 (83.3) | 7 (53.9) | 18 (64.3) | 9 (52.9) | ||
| Yes | 5 (16.7) | 6 (46.2) | 10 (35.7) | 8 (47.1) | ||
| Full Posterior Fossa Boost | <0.01 | |||||
| No | - | - | - | 27 (96.4) | 10 (58.8) | |
| Yes | - | - | - | 1 (3.6) | 7 (41.2) | |
| Mean ± SD (Range) | Mean ± SD (Range) | Mean ± SD (Range) | Mean ± SD (Range) | |||
| Karnofsky/Lansky Score | 88.5 ± 13.2 (50.0 - 100.0) |
85.6 ± 10.1 (70.0 - 100.0) |
0.54 | 80.8 ± 15.0 (50.0 - 100.0) |
69.2 ± 14.4 (50.0 - 90.0) |
0.03 |
| Age at Diagnosis (yrs) | 6.0 ± 4.0 (1.1 - 16.1) |
7.0 ± 3.8 (2.2 - 12.7) |
0.44 | 8.2 ± 4.1 (2.4 - 15.5) |
6.0 ± 4.0 (0.9 – 18.0) |
0.08 |
| Age RT Initiated (yrs) | 7.0 ± 4.3 (1.5 - 16.3) |
8.1 ± 4.0 (2.8 – 16.0) |
0.47 | 8.5 ± 4.1 (2.9 - 15.5) |
6.1 ± 4.0 (1.2 - 18.0) |
0.06 |
| Age RT Completed (yrs) | 7.1 ± 4.3 (1.6 - 16.4) |
8.2 ± 4.0 (2.9 - 16.1) |
0.46 | 8.6 ± 4.1 (3.0 - 15.6) |
6.3 ± 4.0 (1.3 - 18.1) |
0.06 |
| Age at Evaluation (yrs) | 13.4 ± 4.8 (6.1 - 23.5) |
16.8 ± 6.4 (8.5 - 31.4) |
0.06 | 14.5 ± 3.8 (8.8 - 22.6) |
16.0 ± 4.5 (10.2 - 30.1) |
0.24 |
| Time from RT to Evaluation (yrs) | 6.3 ± 2.7 (1.2 - 10.6) |
8.7 ± 3.4 (4.0 - 15.3) |
0.02 | 5.9 ± 3.3 (1.2 - 11.1) |
9.8 ± 2.5 (5.8 - 13.9) |
< 0.01 |
| Median (Range) | Median (Range) | Median (Range) | Median (Range) | |||
| CSI Dose (cGy) | - | - | - | 23.4 (18.0 - 36.0) |
30.0 (21.0 - 39.6) |
0.04 |
| Total Radiation Dose (Gy) | 50.4 (45.0 - 59.4) |
54.0 (48.6 - 59.4) |
0.02 | 54.0 (45.0 - 55.8) |
54.0 (30.6 - 55.8) |
0.29 |
| Average Household Income Median Income Bracket ($) | 80,000 - 99,999 (<10,000 – >200,000) |
80,000 - 99,999 (< 10,000 - > 200,000) |
0.46 | 40,000 - 59,999 (< 10,000 - > 200,000) |
60,000 - 79,999 (< 10,000 - 179,999) |
0.76 |
Note. Bold font indicates group differences with p < 0.05.