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Table 1 Studies included in this meta-analysis

From: The diagnostic value of cerebrospinal fluid lactate for post-neurosurgical bacterial meningitis: a meta-analysis

Authors

Publication year

Type of study

Cut-off value (mmol/L)

Gold standard

Leib et al. [6]

1999

Retrospective

4.0

1) or 2) or 3):

1) positive bacterial CSF culture and CSF WBC > 2.5 × 108/L

2) CSF WBC > 1 × 109/L and neutrophils >50 %

3) CSF WBC > 2.5 × 108/L and neutrophils >50 % in patients treated with steroids or antibiotics at the time of LP

Tavares et al. [25]

2006

Prospective

5.4

positive bacterial CSF culture or Gram stain

Grille et al. [21]

2012

Prospective

5.2

1) or 2):

1) positive bacterial CSF culture or Gram stain

2) negative bacterial CSF culture or Gram stain and CSF WBC > 1 × 109/L (>50 % neutrophils) in patients treated with antibiotics at the time of lumbar puncture

Maskin et al. [22]

2013

Prospective

4.0

1) or 2):

1) positive bacterial CSF culture or Gram stain and CSF WBC ≥ 1 × 105/L or (CSF glucose <40 mg/dL or CSF glucose/blood glucose <0.4)

2) CSF WBC ≥ 2.5 × 105/L and CSF glucose/blood glucose <0.5 if patients received antibiotics 24 h prior to CSF sampling

Li et al. [18]

2014

Retrospective

3.45

a All of the below:

1) clinical symptoms

2) positive bacterial CSF culture or Gram stain

3) CSF WBC count ≥1 × 109/L and polykaryocyte percentage ≥75 %

4) CSF glucose <2.5 mmol/L or CSF glucose/blood glucose <0.4.

  1. a Patients who did not meet these criteria with a CSF WBC count <5 × 108/L were classified into the non-PNBM group