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General characteristics of cohort (n=3915)
| Female gender, N (%) | 1433 (36.6) |
| Race, N (%) | |
| White | 2624 (67.1) |
| Black | 540 (13.8) |
| Other | 746 (19.1) |
| Unknown | 5 |
| Underwent surgery, N (%) | 1860 (47.5) |
| Burr Hole | 1614(41.2) |
| Craniotomy | 246 (6.3) |
| Repeat surgery, N (%) | 99 (2.5) |
| Treated with dexamethasone, N (%) | 360 (9.2) |
