Table 1.
Demographic and clinical characteristics, overall and by treatment group
|
Radiation to COW N = 221 |
Non-COW Radiation N = 44 |
No Radiation N = 161 |
Total N = 426* |
Pvalue † | |
|---|---|---|---|---|---|
| Female | 94 (42.5%) | 19 (43%) | 71 (44%) | 186(43%) | P= .97 |
| Ethnicity | P=.07 | ||||
| Caucasian: | 165 | 26 | 124 | 315 (73.8%) | |
| African American: | 32 | 13 | 15 | 60 (14.1%) | |
| Hispanic: | 10 | 3 | 5 | 18 (4.2%) | |
| Asian: | 4 | 0 | 6 | 10 (2.3%) | |
| Other: | 6 | 1 | 6 | 13 (3%) | |
| Unknown: | 4 | 1 | 5 | 10 (2.3%) | |
| Median age at diagnosis (SD) years |
8.9 (4.7) | 10.2 (5.5) | 5.4 (5.9) | 7.6 (5.3) | P<.001 |
| Median Age at Radiation (SD) years |
9.1 (4.4) | 10.5 (5.3) | P =.06 | ||
| Median Radiation Dose Gy (IQR) |
55.8 (54- 59.4) |
54 (54-55.8) | P=.02 | ||
| Median Follow up (SD) years |
6.3 (4.4) | 7.3 (4.5) | 6.7 (3.8) | 6.5 (4.2) | P=.3 |
COW:Circle of Willis, Gy:gray, SD:standard deviation, IQR:interquartile range
†
P-value comparing exposure groups:Radiation to COW, Non-COW radiation, and no radiation
*
Radiation information was missing for 5 of 431 subjects