Table 4

Comparison between infected and uninfected catheters

Infection within 30 daysp Value
No (%)Yes (%)
Catheter type
 Plain149 (92.5)12 (7.5)0.314
 Antibiotic-impregnated174 (92.6)14 (7.4)
 Silver-bearing126 (86.3)20 (13.7)
CSF sampling frequency
 No sampling129 (100)0 (0)<0.01
 1–2 times per week211 (90.2)23 (9.8)
 Alternate days15 (62.5)9 (26.5)
 Daily3 (42.9)4 (57.1)
 Unknown91 (90.1)10 (9.9)
Length of tunnelling
 0–5 cm106 (89.1)13 (10.9)0.71
 5–10 cm328 (91.4)31 (8.6)
 >10 cm15 (88.2)2 (11.8)
Primary surgeon
 Intern/Foundation doctor4 (80.0)1 (20.0)0.25
 Junior neurosurgery trainee87 (89.7)10 (10.3)
 Senior neurosurgery trainee294 (89.9)33 (10.1)
 Consultant64 (97.0)2 (3.0)
Duration of EVD use*
 0–7 days236 (95.9)10 (4.1)<0.01
 8+days212 (85.8)35 (14.2)
CSF diversion
 Permanent CSF diversion71 (91.0)7 (9.0)0.91
 No permanent diversion378 (90.6)39 (9.4)
  • Comparisons made using Χ2 test.

  • *Two cases excluded as no valid exit date.

  • CSF, cerebrospinal fluid; EVD, external ventricular drain.