Patient characteristics in the randomised groups
| Variable | Group 1 (change) | Group 2 (no change) | p Value |
|---|---|---|---|
| Values are n (%) or *mean (SD). | |||
| †One needed to be changed because of blockage. | |||
| EVD, external ventricular drain; F, female; M, male. | |||
| Number of patients | 51 | 52 | |
| Age (years)* | 55 (14) | 49 (15) | 0.051 |
| M/F | 27/24 | 27/25 | 0.918 |
| Indications for EVD (%) | 0.577 | ||
| Head injury | 9 (18) | 9 (17) | |
| Stroke | 39 (77) | 42(81) | |
| Others | 3 (6) | 1(2) | |
| Associated craniotomy (%) | 22 (43) | 24 (46) | 0.844 |
| Duration of EVD needed (days)* | 13 (7) | 11(4) | 0.19 |
| Number of EVDs changed* | 2.8 (1.0) | † | |