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Table 3 Effect of repositioning

From: Cerebrospinal fluid cell count variability is a major confounding factor in external ventricular drain-associated infection surveillance diagnostics: a prospective observational study

Predictor variables

Repositioned

P-value

LE ratio

 

   \(\Delta\)*

.1

   Relative \(\Delta\)

.04

   Absolute \(\Delta\)*

\(<{\mathbf .01}\)

Granulocytes

 

   \(\Delta\)*

.09

   Relative \(\Delta\)

.046

   Absolute \(\Delta\)*

\(<{\mathbf .001}\)

Erythrocytes

 

   \(\Delta\)*

.61

   Relative \(\Delta\)

.1

   Absolute \(\Delta\)*

\(<{\mathbf .001}\)

Albumin

 

   \(\Delta\)*

.06

   Relative \(\Delta\)

.12

   Absolute \(\Delta\)*

.01

Lactate

 

   \(\Delta\)

.64

   Relative \(\Delta\)

.36

   Absolute \(\Delta\)

\(<{\mathbf .01}\)

Glucose

 

   \(\Delta\)

.78

   Relative \(\Delta\)

.93

   Absolute \(\Delta\)

\(<{\mathbf .01}\)

  1. Univariate mixed effect logistic regression analysis toward repositioning. The results of \(p<.01\) are bolded. Changes in all parameters can be seen attributable to repositioning, but not unidirectional and therefore predominately in the absolute \(\Delta\) representation. *indicates log transformation of variable. \(\Delta\): pair-wise difference, including absolute and relative derivatives