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Table 2 Comparison of different correction formulas for the detection of bacterial and/or viral meningitis in neonates with traumatic LPs

From: Interpretation of white blood cell counts in the cerebrospinal fluid of neonates with traumatic lumbar puncture: a retrospective cohort study

  

AUC (95% CI)

S

Sp

 + LH

-LH

PPV

NPV

MENINGITIS

Uncorrected WBC

0.91 (0.83–0.98)

1.00

0.35

1.54

0.00

0.06

1.00

RBC:WBC 500:1

0.92 (0.81–1.00)

0.93

0.81

4.87

0.08

0.15

1.00

RBC:WBC 1000:1

0.92 (0.84–1.00)

0.93

0.64

2.58

0.11

0.09

1.00

RBC:WBC 400:1

0.92 (0.82–1.00)

0.93

0.84

5.99

0.08

0.18

1.00

Peripheral blood WBC

0.93 (0.84–1.00)

0.92

0.90

9.44

0.09

0.24

1.00

BACTERIAL

MENINGITIS

Uncorrected WBC

0.93 (0.87–0.98)

1.00

0.38

1.60

0.00

0.04

1.00

RBC:WBC 500:1

0.97 (0.94–0.99)

1.00

0.80

5.07

0.00

0.12

1.00

RBC:WBC 1000:1

0.96 (0.93–0.99)

1.00

0.63

2.73

0.00

0.07

1.00

RBC:WBC 400:1

0.97 (0.95–0.99)

1.00

0.84

6.19

0.00

0.14

1.00

Peripheral blood WBC

0.98 (0.96–0.99)

1.00

0.90

9.56

0.00

0.18

1.00

VIRAL

MENINGITIS

Uncorrected WBC

0.84 (0.64–1.00)

1.00

0.37

1.59

0.00

0.02

1.00

RBC:WBC 500:1

0.79 (0.46–1.00)

0.75

0.79

3.53

0.32

0.03

1.00

RBC:WBC 1000:1

0.83 (0.60–1.00)

0.75

0.62

1.98

0.40

0.02

1.00

RBC:WBC 400:1

0.80 (0.49–1.00)

0.75

0.82

4.22

0.30

0.04

1.00

Peripheral blood WBC

0.82 (0.53–1.00)

0.75

0.87

5.59

0.29

0.06

1.00

  1. Abbreviations: AUC area under the curve, CI confidence interval, LH likelihood ratio, NPV negative predictive value, PPV positive predictive value, S sensitivity, Sp specificity