| Antibiotic Duration after Craniotomy | Frequency | Percent % |
| 0 - 15 days | 4 | 13.8% |
| 16 - 30 days | 2 | 6.9% |
| 31 - 45 days | 21 | 72.4% |
| 46 - 60 days | 1 | 3.4% |
| More than 60 days | 1 | 3.4% |
| Total | 29 | 100.0% |