Operative characteristics | No. | % |
Length of tunnelling | ||
0–5 cm | 119 | 24.0 |
5–10 cm | 359 | 72.5 |
>10 cm | 17 | 3.4 |
Postoperative CT head scan | ||
No | 100 | 20.2 |
Yes | 395 | 79.8 |
CSF sampling frequency | ||
No sampling | 129 | 26.1 |
1–2 times per week | 234 | 47.3 |
Alternate days | 24 | 4.9 |
Daily | 7 | 1.4 |
Unknown | 101 | 20.4 |
Catheter type | ||
Plain | 161 | 32.5 |
Antibiotic-impregnated | 188 | 38 |
Silver-bearing | 146 | 29.5 |
Primary surgeon | ||
Intern/Foundation doctor | 5 | 1.0 |
Junior neurosurgery trainee | 97 | 19.6 |
Senior neurosurgery trainee | 327 | 66.1 |
Consultant/Attending | 66 | 13.3 |
CSF, cerebrospinal fluid; EVD, external ventricular drain.