Table 4 Binomial logistic regression model with covariates associated with the risk of an EVD-related infection (n = 409, entire cohort, bootstrapped with 1000 samples)

CSF fistula

2.13

0.88–5.16

0.09

No Protocol

2.69

1.22–5.95

0.01

Junior resident performing surgery

0.87

0.39–1.96

0.75

Senior resident performing surgery

0.76

0.39–1.96

0.51

Staff member performing surgery

Reference category

Times CSF sampled

1.55

1.28–1.88

< 0.0001

Duration of drainage

1.03

0.98–1.08

0.21

EVD placement for SAH

0.50

0.25–1.09

0.08

EVD placement for tumor

0.25

0.19–18.52

0.25

EVD placement for other types of hydrocephalus

Reference category